Sunday 1 August 2021

Honey bee help Human..

A honey bee (additionally spelled honeybee) is a eusocial flying insect inside the genus Apis of the bee clade, all native to Eurasia. They are known for his or her production of perennial colonial nests from wax, the large length in their colonies, and surplus production and storage of honey, distinguishing their hives as a prized foraging goal of many animals, inclusive of honey badgers, bears and human hunter-gatherers. Only eight surviving species of honey bee are recognized, with a total of 43 subspecies, although traditionally 7 to 11 species are identified. Honey bees constitute only a small fraction of the roughly 20,000 known species of bees.

Honey bees
Temporal variety: Oligocene–Recent 
PreꞒꞒOSDCPTJKPgN
The Lone Pollinator.Jpg
Western honey bee at the bars of a horizontal pinnacle-bar hive
Scientific classificatione
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Hymenoptera
Family:
Apidae
Clade:
Corbiculata
Tribe:
Apini
Latreille, 1802
Genus:
Apis
Linnaeus, 1758
Type species
Apis mellifera[citation needed]
Linnaeus, 1758
Species
†Apis lithohermaea
†Apis nearctica
Subgenus Micrapis:
Apis andreniformis
Apis florea
Subgenus Megapis:
Apis dorsata
Apis laboriosa
Subgenus Apis:
Apis cerana
Apis koschevnikovi
Apis mellifera
Apis nigrocincta
The fine recognised honey bee is the western honey bee (Apis mellifera), which has been domesticated for honey manufacturing and crop pollination; the best other domesticated bee is the jap honey bee (Apis cerana), which happens in South Asia. Some different forms of related bees produce and store honey, and have been saved through human beings for that motive, such as the stingless bees, however most effective participants of the genus Apis are authentic honey bees. Modern human beings also cost the wax for use in making candles, cleaning soap, lip balms, and numerous cosmetics.

Etymology and name Edit
The genus call Apis is Latin for "bee".[1] Although current dictionaries may also seek advice from Apis as both honey bee or honeybee, entomologist Robert Snodgrass asserts that correct utilization calls for two phrases, i.E. Honey bee, as it is a type or kind of bee, whereas it is wrong to run the 2 words collectively, as in dragonfly or butterfly, due to the fact the latter aren't flies,[2] and haven't any reference to dragons or butter. Honey bee, now not honeybee, is the indexed commonplace call inside the Integrated Taxonomic Information System, the Entomological Society of America Common Names of Insects Database, and the Tree of Life Web Project.[3][4][5]

Origin, systematics, and distribution Edit

Distribution of honey bees around the arena

Morphology of a sterile girl employee honey bee
Honey bees seem to have their center of foundation in South and Southeast Asia (consisting of the Philippines), as all the extant species besides Apis mellifera are native to that place. Notably, living representatives of the earliest lineages to diverge (Apis florea and Apis andreniformis) have their center of foundation there.[6]

The first Apis bees appear within the fossil file at the Eocene-Oligocene boundary (34 mya), in European deposits. The origin of these prehistoric honey bees does now not necessarily imply Europe as the area of foundation of the genus, only that the bees have been present in Europe with the aid of that point. Few fossil deposits are recognised from South Asia, the suspected location of honey bee beginning, and less nevertheless have been thoroughly studied.

No Apis species existed inside the New World during human instances earlier than the advent of A. Mellifera through Europeans. Only one fossil species is documented from the New World, Apis nearctica, known from a unmarried 14 million-year-old specimen from Nevada.[7]

The close spouse and children of present day honey bees – e.G., bumblebees and stingless bees – are also social to some degree, and social behavior appears a plesiomorphic trait that predates the origin of the genus. Among the extant contributors of Apis, the more basal species make unmarried, exposed combs, at the same time as the more lately developed species nest in cavities and have more than one combs, which has substantially facilitated their domestication.

Species Edit
While about 20,000 species of bees exist,[8] simplest eight species of honey bee are identified, with a total of 43 subspecies, despite the fact that historically seven to 11 species are diagnosed:[9] Apis andreniformis (the black dwarf honey bee); Apis cerana (the jap honey bee); Apis dorsata (the large honey bee); Apis florea (the purple dwarf honey bee); Apis koschevnikovi (Koschevnikov's honey bee); Apis laboriosa (the Himalayan massive honey bee); Apis mellifera (the western honey bee); and Apis nigrocincta (the Philippine honey bee).[10]

Honey bees are the handiest extant contributors of the tribe Apini. Today's honey bees constitute 3 clades: Micrapis (the dwarf honey bees), Megapis (the massive honey bee), and Apis (the western honey bee and its near spouse and children).[9][11]

Most species have traditionally been cultured or as a minimum exploited for honey and beeswax via humans indigenous to their local levels. Only two species had been without a doubt domesticated: Apis mellifera and Apis cerana. A. Mellifera has been cultivated at least for the reason that time of the constructing of the Egyptian pyramids, and most effective that species has been moved notably past its native variety.[citation needed]

Micrapis Edit
Apis florea and Apis andreniformis are small honey bees of southern and southeastern Asia. They make very small, uncovered nests in timber and shrubs. Their stings are frequently incapable of penetrating human pores and skin, so the hive and swarms may be dealt with with minimal protection. They arise in large part sympatrically, even though they're very distinct evolutionarily and are in all likelihood the result of allopatric speciation, their distribution later converging.

Given that A. Florea is extra extensively distributed and A. Andreniformis is notably more competitive, honey is, if at all, normally harvested from the previous simplest. They are the most historical extant lineage of honey bees, perhaps diverging in the Bartonian (some 40 million years ago or barely later) from the opposite lineages, however do no longer appear to have diverged from every other a long time earlier than the Neogene.[11] Apis florea have smaller wing spans than its sister species.[12] Apis florea also are completely yellow except the scutellum of people, that is black.[12]

Megapis Edit
Two species are recognized within the subgenus Megapis. They typically build single or some exposed combs on excessive tree limbs, on cliffs, and every now and then on homes. They can be very fierce. Periodically robbed in their honey by using human "honey hunters", colonies are easily able to stinging a individual to dying if provoked.

Apis dorsata, the large honey bee, is native and huge across maximum of South and Southeast Asia.
A. D. Binghami, the Indonesian giant honey bee, is classed as the Indonesian subspecies of the massive honey bee or a distinct species; within the latter case, A. D. Breviligula and / or different lineages would likely also ought to be considered species.[13]
Apis laboriosa, the Himalayan massive honey bee, became to start with defined as a awesome species. Later, it was included in A. Dorsata as a subspecies[9] based on the organic species concept, though authors applying a genetic species concept have suggested it need to be considered a separate species[11] and greater latest studies has confirmed this class.[14] Essentially limited to the Himalayas, it differs little from the large honey bee in look, but has vast behavioral adaptations that permit it to nest in the open at high altitudes notwithstanding low ambient temperatures. It is the largest dwelling honey bee.
Apis Edit

Western honey bee on a honeycomb
Eastern Apis species include three or four species, along with A. Koschevnikovi, Apis nigrocincta, and A. Cerana. The genetics of the western honey bee (A. Mellifera) are uncertain.

Koschevnikov's honey bee Edit
Koschevnikov's honey bee (Apis koschevnikovi) is regularly referred to in the literature because the "purple bee of Sabah"; but, A. Koschevnikovi is faded reddish in Sabah State, Borneo, Malaysia, but a darkish, coppery colour within the Malay Peninsula and Sumatra, Indonesia.[15] Its habitat is restrained to the tropical evergreen forests of the Malay Peninsula, Borneo and Sumatra and they do not live in tropical evergreen rain forests which extend into Thailand, Myanmar, Cambodia and Vietnam.[15]

Philippine honey bee Edit
Apis nigrocincta is a hollow space-nesting species. The species has rust-coloured scapes, legs, and clypeuses, with reddish-tan hair color that covers most of the frame.[16]

Eastern honey bee Edit
Apis cerana, the japanese honey bee proper, is the conventional honey bee of southern and japanese Asia. One of its subspecies, the Indian honey bee (A. C. Indica), became domesticated and saved in hives in a fashion much like A. Mellifera, although on a greater restricted, regional scale.

It has no longer been feasible but to solve its dating to the Bornean honey bee A. C. Nuluensis and Apis nigrocincta from the Philippines to pleasure; some researchers argue that those are certainly distinct species, but that A. Cerana as defined continues to be paraphyletic, which includes several separate species,[11] though different researchers argue cerana is a unmarried monophyletic species.[17]

Western honey bee Edit
Main article: Apis mellifera

The European honey bee may additionally have originated from japanese Africa. This bee is pictured in Tanzania.
A. Mellifera, the maximum common domesticated[18] species, turned into the 0.33 insect whose genome become mapped. It appears to have originated in eastern tropical Africa and unfold from there to Europe and eastwards into Asia to the Tian Shan range. It is variously called the European, western, or common honey bee in specific components of the arena. Many subspecies have adapted to the nearby geographic and climatic environments; in addition, breeds together with the Buckfast bee were bred. Behavior, coloration, and anatomy may be quite exclusive from one subspecies or maybe strain to any other.[19]

A. Mellifera phylogeny is the maximum enigmatic of all honey bee species. It appears to have diverged from its eastern relatives handiest throughout the Late Miocene. This could in shape the hypothesis that the ancestral stock of cave-nesting honey bees become separated into the western group of East Africa and the jap group of tropical Asia by using desertification within the Middle East and adjacent regions, which precipitated declines of meals flora and trees that furnished nest websites, eventually causing gene drift to end.[19]

The variety of A. Mellifera subspecies is probably the fabricated from a in large part Early Pleistocene radiation aided by means of weather and habitat changes over the past ice age. That the western honey bee has been intensively managed by way of people for lots millennia – which includes hybridization and introductions – has apparently extended the velocity of its evolution and confounded the DNA series facts to a degree wherein little of substance can be said approximately the exact relationships of many A. Mellifera subspecies.[11]

Apis mellifera isn't always local to the Americas, so it was now not present while the European explorers and colonists arrived. However, other native bee species were stored and traded by using indigenous peoples.[20] In 1622, European colonists introduced the German honey bee (A. M. Mellifera) to the Americas first, accompanied later through the Italian honey bee (A. M. Ligustica) and others. Many of the crops that depend upon western honey bees for pollination have additionally been imported in view that colonial instances. Escaped swarms (called "wild" honey bees, but genuinely feral) spread swiftly as some distance because the Great Plains, commonly previous the colonists. Honey bees did now not naturally pass the Rocky Mountains; they had been transported by the Mormon pioneers to Utah within the overdue 1840s, and by using ship to California inside the early 1850s.[21]


An Africanized honey bee (left) and a European honey bee on a honeycomb
Africanized honey bee Edit
Main article: Africanized bee
Africanized honey bees (regarded colloquially as "killer bees") are hybrids among European stock and the East African lowland subspecies A. M. Scutellata; they are regularly extra competitive than European honey bees and do now not create as a whole lot of a honey surplus, but are greater proof against disorder and are better foragers.[22] Accidentally launched from quarantine in Brazil, they've unfold to North America and represent a pest in some regions. However, those lines do now not overwinter properly, so they're now not regularly determined inside the less warm, extra northern parts of North America. The authentic breeding test for which the East African lowland honey bees have been brought to Brazil within the first vicinity has persevered (though now not as at the start meant). Novel hybrid lines of home and re-domesticated Africanized honey bees combine excessive resilience to tropical conditions and precise yields. They are famous among beekeepers in Brazil.[citation needed]

Living and fossil honey bees (Apini: Apis) Edit
Tribe Apini Latreille[23]

Genus Apis Linnaeus (sensu lato)

henshawi species group (†Priorapis Engel, †Synapis Cockerell)
†A. Vetusta Engel
†A. Henshawi Cockerell
†A. Petrefacta (Říha)
†A. Miocenica Hong
†A. "longtibia" Zhang
†A. "Miocene 1"
armbrusteri species institution (†Cascapis Engel)
†A. Armbrusteri Zeuner
†A. Nearctica, species novus
florea species institution (Micrapis Ashmead)
A. Florea Fabricius
A. Andreniformis Smith
dorsata species organization (Megapis Ashmead)
†A. Lithohermaea Engel
A. Dorsata Fabricius
A. Laboriosa Smith
mellifera species organization (Apis Linnaeus sensu stricto)
mellifera subgroup
A. Mellifera Linnaeus (Apis Linnaeus sensu strictissimo)
cerana subgroup (Sigmatapis Maa)
A. Cerana Fabricius
A. Nigrocincta Smith
A. Koschevnikovi Enderlein
Life cycle Edit
As in some different sorts of eusocial bees, a colony generally incorporates one queen bee, a lady; seasonally up to three thousand drone bees, or men;[24] and tens of hundreds of girl worker bees. Details range a few of the extraordinary species of honey bees, however common functions consist of:

Eggs are laid singly in a cell in a wax honeycomb, produced and shaped through the worker bees. Using her spermatheca, the queen can pick to fertilize the egg she is laying, normally depending on which cell she is laying it into. Drones develop from unfertilised eggs and are haploid, while ladies (queens and employee bees) increase from fertilised eggs and are diploid. Larvae are to begin with fed with royal jelly produced with the aid of worker bees, later switching to honey and pollen. The exception is a larva fed totally on royal jelly, which will become a queen bee. The larva undergoes several moultings earlier than spinning a cocoon in the cell, and pupating.
Young worker bees, every now and then called "nurse bees", clean the hive and feed the larvae. When their royal jelly-generating glands begin to atrophy, they start constructing comb cells. They progress to other within-colony obligations as they emerge as older, including receiving nectar and pollen from foragers, and guarding the hive. Later nonetheless, a worker takes her first orientation flights and finally leaves the hive and commonly spends the the rest of her lifestyles as a forager.
Worker bees cooperate to find food and use a pattern of "dancing" (called the bee dance or waggle dance) to communicate statistics concerning resources with each other; this dance varies from species to species, but all dwelling species of Apis exhibit some shape of the conduct. If the assets are very near the hive, they will additionally exhibit a much less specific dance typically known as the "round dance".
Honey bees additionally carry out tremble dances, which recruit receiver bees to acquire nectar from returning foragers.
Virgin queens cross on mating flights faraway from their home colony to a drone congregation place, and mate with more than one drones before returning. The drones die within the act of mating. Queen honey bees do not mate with drones from their home colony.
Colonies are mounted no longer by way of solitary queens, as in maximum bees, but by means of companies known as "swarms", which consist of a mated queen and a massive contingent of employee bees. This institution moves en masse to a nest website which changed into scouted with the aid of worker bees ahead and whose area is communicated with a unique sort of dance. Once the swarm arrives, they without delay assemble a new wax comb and begin to elevate new worker brood. This kind of nest founding isn't always seen in another residing bee genus, although numerous companies of vespid wasps additionally found new nests through swarming (on occasion such as a couple of queens). Also, stingless bees will start new nests with large numbers of worker bees, however the nest is constructed earlier than a queen is escorted to the web site, and this employee force isn't always a true "swarm".
Gallery Edit

Honey bee eggs proven in opened wax cells

 

Eggs and larvae

 

Drone pupae

 

Emergence of a European dark honey bee (A. M. Mellifera)

Winter survival Edit
In cold climates, honey bees forestall flying while the temperature drops beneath about 10 °C (50 °F) and crowd into the relevant vicinity of the hive to shape a "wintry weather cluster". The employee bees huddle around the queen bee on the center of the cluster, shivering to preserve the middle between 27 °C (eighty one °F) on the begin of iciness (in the course of the broodless duration) and 34 °C (ninety three °F) once the queen resumes laying. The worker bees rotate thru the cluster from the out of doors to the inside in order that no bee gets too cold. The out of doors edges of the cluster live at approximately eight–nine °C (forty six–forty eight °F). The colder the climate is outside, the more compact the cluster turns into. During winter, they devour their saved honey to provide frame warmness. The quantity of honey fed on throughout the iciness is a characteristic of wintry weather length and severity, but degrees in temperate climates from 15 to 50 kilograms (33 to one hundred ten lb).[25] In addition, positive bees, such as the western honey bee in addition to Apis cerana, are recognized to engage in powerful methods of nest thermoregulation all through intervals of varying temperature in each summer and winter. During the summer time, but, this is done through fanning and water evaporation from water gathered in various fields..

Tree we are helps

In botany, a tree is a perennial plant with an elongated stem, or trunk, assisting branches and leaves in most species. In a few usages, the definition of a tree may be narrower, which includes handiest wooden plants with secondary growth, plants which might be usable as lumber or vegetation above a distinct height. In wider definitions, the taller hands, tree ferns, bananas, and bamboos also are timber. Trees are not a taxonomic organization but consist of a diffusion of plant species which have independently developed a trunk and branches as a manner to tower above other vegetation to compete for sunlight. Trees have a tendency to be lengthy-lived, a few attaining several thousand years antique. Trees had been in existence for 370 million years. It is predicted that there are some 3 trillion mature bushes within the global.[1]


Common ash (Fraxinus excelsior), a deciduous huge-leaved (angiosperm) tree

European larch (Larix decidua), a coniferous tree which is also deciduous
A tree usually has many secondary branches supported clear of the ground by way of the trunk. This trunk commonly contains woody tissue for strength, and vascular tissue to carry materials from one a part of the tree to some other. For most trees it's far surrounded with the aid of a layer of bark which serves as a shielding barrier. Below the floor, the roots department and unfold out widely; they serve to anchor the tree and extract moisture and vitamins from the soil. Above ground, the branches divide into smaller branches and shoots. The shoots normally undergo leaves, which seize mild power and convert it into sugars by way of photosynthesis, providing the meals for the tree's boom and improvement.

Trees usually reproduce the use of seeds. Flowers and fruit may be present, however some trees, which includes conifers, as a substitute have pollen cones and seed cones. Palms, bananas, and bamboos also produce seeds, but tree ferns produce spores as an alternative.

Trees play a extensive position in lowering erosion and moderating the climate. They put off carbon dioxide from the environment and save large portions of carbon of their tissues. Trees and forests offer a habitat for lots species of animals and flowers. Tropical rainforests are many of the maximum biodiverse habitats inside the global. Trees offer colour and shelter, wooden for production, fuel for cooking and heating, and fruit for food in addition to having many different uses. In components of the world, forests are shrinking as bushes are cleared to growth the amount of land available for agriculture. Because in their sturdiness and value, trees have constantly been respected, with sacred groves in numerous cultures, and that they play a role in among the international's mythologies.

Definition

Diagram of secondary boom in a eudicot or coniferous tree displaying idealised vertical and horizontal sections. A new layer of wood is brought in every growing season, thickening the stem, present branches and roots.
Although "tree" is a time period of common parlance, there may be no universally acknowledged particular definition of what a tree is, both botanically or in commonplace language.[2][3] In its broadest feel, a tree is any plant with the overall form of an elongated stem, or trunk, which helps the photosynthetic leaves or branches at a long way above the ground.[4] Trees are also typically described by means of top,[5] with smaller flowers from 0.Five to 10 m (1.6 to 32.8 toes) being referred to as shrubs,[6] so the minimum peak of a tree is most effective loosely described.[5] Large herbaceous plant life such as papaya and bananas are bushes in this extensive experience.[3][7]

A normally implemented narrower definition is that a tree has a woody trunk shaped by way of secondary growth, that means that the trunk thickens every 12 months by developing outwards, similarly to the number one upwards increase from the growing tip.[5][8] Under this kind of definition, herbaceous plant life such as arms, bananas and papayas aren't considered trees no matter their height, growth form or stem girth. Certain monocots can be considered timber underneath a slightly looser definition;[9] whilst the Joshua tree, bamboos and fingers do no longer have secondary increase and in no way produce genuine timber with increase rings,[10][11] they will produce "pseudo-wood" via lignifying cells fashioned by number one increase.[12] Tree species in the genus Dracaena, no matter additionally being monocots, do have secondary growth caused by meristem of their trunk, however it is one-of-a-kind from the thickening meristem located in dicotyledonous trees.[13]

Aside from structural definitions, trees are generally described by means of use; for example, as the ones plant life which yield lumber.[14]

Overview
The tree increase addiction is an evolutionary variation discovered in specific companies of flora: through developing taller, timber are able to compete higher for daylight.[15] Trees tend to be tall and lengthy-lived,[16] a few reaching several thousand years vintage.[17] Several bushes are some of the oldest organisms now dwelling.[18] Trees have changed structures along with thicker stems composed of specialised cells that upload structural power and sturdiness, letting them grow taller than many different plant life and to unfold out their foliage. They differ from shrubs, which have a similar increase form, with the aid of typically developing larger and having a single principal stem;[6] but there's no steady difference between a tree and a shrub,[19] made extra difficult through the truth that trees can be shrunk beneath harsher environmental conditions such as on mountains and subarctic regions. The tree shape has developed one by one in unrelated training of plant life in response to comparable environmental demanding situations, making it a classic example of parallel evolution. With an anticipated 60,000-one hundred,000 species, the variety of trees worldwide would possibly general twenty-5 in step with cent of all residing plant species.[20][21] The best quantity of these grow in tropical regions and lots of those regions have now not but been fully surveyed by using botanists, making tree diversity and levels poorly known.[22]


Tall herbaceous monocotyledonous flora together with banana lack secondary increase, however are bushes underneath the broadest definition.
The majority of tree species are angiosperms. There are about 1000 species of gymnosperm bushes,[23] consisting of conifers, cycads, ginkgophytes and gnetales; they produce seeds which are not enclosed in fruits, however in open systems which include pine cones, and lots of have difficult waxy leaves, consisting of pine needles.[24] Most angiosperm timber are eudicots, the "actual dicotyledons", so named because the seeds comprise  cotyledons or seed leaves. There also are some timber most of the antique lineages of flowering plants called basal angiosperms or paleodicots; those consist of Amborella, Magnolia, nutmeg and avocado,[25] while timber along with bamboo, fingers and bananas are monocots.

Wood gives structural strength to the trunk of maximum forms of tree; this supports the plant as it grows large. The vascular gadget of bushes lets in water, nutrients and other chemicals to be disbursed across the plant, and with out it bushes would not be able to develop as big as they do. Trees, as distinctly tall flowers, want to draw water up the stem through the xylem from the roots by using the suction produced as water evaporates from the leaves. If inadequate water is to be had the leaves will die.[26] The 3 essential elements of timber include the root, stem, and leaves; they're essential components of the vascular machine which interconnects all of the residing cells. In trees and other plant life that broaden wooden, the vascular cambium permits the expansion of vascular tissue that produces woody increase. Because this growth ruptures the dermis of the stem, woody vegetation actually have a cork cambium that develops some of the phloem. The cork cambium offers upward thrust to thickened cork cells to shield the surface of the plant and decrease water loss. Both the production of wooden and the production of cork are varieties of secondary increase.[27]

Trees are either evergreen, having foliage that persists and stays green during the 12 months,[28] or deciduous, shedding their leaves at the end of the developing season and then having a dormant period with out foliage.[29] Most conifers are evergreens, however larches (Larix and Pseudolarix) are deciduous, dropping their needles each autumn, and a few species of cypress (Glyptostrobus, Metasequoia and Taxodium) shed small leafy shoots yearly in a manner called cladoptosis.[6] The crown is the spreading pinnacle of a tree including the branches and leaves,[30] even as the uppermost layer in a forest, formed by way of the crowns of the timber, is called the canopy.[31] A sapling is a young tree.[32]

Many tall hands are herbaceous[33] monocots; these do now not go through secondary boom and never produce wooden.[10][11] In many tall palms, the terminal bud on the principle stem is the simplest one to broaden, in order that they have unbranched trunks with large spirally arranged leaves. Some of the tree ferns, order Cyatheales, have tall straight trunks, developing up to 20 metres (sixty six ft), however these are composed not of timber however of rhizomes which grow vertically and are protected by using severa adventitious roots.[34]

Distribution
Further statistics: Forest

The Daintree Rainforest
The wide variety of trees inside the world, in line with a 2015 estimate, is 3.04 trillion, of which 1.39 trillion (46%) are in the tropics or sub-tropics, 0.Sixty one trillion (20%) inside the temperate zones, and 0.Seventy four trillion (24%) inside the coniferous boreal forests. The estimate is ready eight instances higher than preceding estimates, and is primarily based on tree densities measured on over four hundred,000 plots. It remains concern to a huge margin of mistakes, now not least because the samples are particularly from Europe and North America. The estimate suggests that about 15 billion trees are reduce down annually and about five billion are planted. In the 12,000 years since the start of human agriculture, the quantity of bushes worldwide has reduced by means of forty six%.[1][35][36][37]

In appropriate environments, together with the Daintree Rainforest in Queensland, or the mixed podocarp and broadleaf wooded area of Ulva Island, New Zealand, wooded area is the extra-or-less strong climatic climax network on the quit of a plant succession, in which open areas which includes grassland are colonised by means of taller vegetation, which in flip deliver way to timber that sooner or later form a forest cover.[38][39]


Conifers inside the Swabian alps
In cool temperate regions, conifers often predominate; a extensively allotted climax community inside the a long way north of the northern hemisphere is moist taiga or northern coniferous forest (also known as boreal forest).[40][41] Taiga is the world's largest land biome, forming 29% of the sector's wooded area cover.[42] The lengthy cold winter of the far north is incorrect for plant growth and bushes ought to develop hastily inside the brief summer time when the temperature rises and the times are long. Light could be very limited below their dense cover and there can be little flowers at the woodland ground, despite the fact that fungi may also abound.[43] Similar wooded area is determined on mountains in which the altitude causes the average temperature to be lower accordingly decreasing the length of the developing season.[44]

Where rainfall is surprisingly evenly spread across the seasons in temperate areas, temperate broadleaf and combined forest typified by species like oak, beech, birch and maple is located.[45] Temperate woodland is likewise located within the southern hemisphere, as as an instance in the Eastern Australia temperate wooded area, characterised through Eucalyptus forest and open acacia wooded area.[46]

In tropical areas with a monsoon or monsoon-like weather, wherein a drier a part of the year alternates with a wet period as in the Amazon rainforest, distinct species of huge-leaved timber dominate the woodland, some of them being deciduous.[47] In tropical areas with a drier savanna climate and insufficient rainfall to assist dense forests, the canopy isn't always closed, and lots of sunshine reaches the floor that is covered with grass and scrub. Acacia and baobab are well adapted to living in such regions.

poco Powerful mobile.

POCo, forMerly known as PoCO by way of Xiao.mi and Pocophone, is a Chinese phone agEncy. The Poco logo turned into first introduced in August 2018 as a mid-variety telephone line below XIaomi. Poco India became an impartial company on 17 January 2020, observed via its international counterpart in 24 November 2020. Po.co released its first smartphone, the Pocophone F1 on August 2018.[1][2][3]

PoCo
Poco Smart.phone Com.pany logo.Png
Type
Company
Industry
Consumer electronics
Founded
August 2018; 2 years ago (as a sub-emblem of Xi.aomi)
As a independent organisation
17 January 2020; 17 months in the past (India)
24 November 2020; 7 months ago (Global)
Area served
Worldwide
Key people
Kevin Qiu (Head of PoCO Global)
Anuj Sharma (Country Director, PoCO India)
Products
Smartphones
Parent
xiaomi (2018-2020)
Independent (2020-present)
Website
www.Po.Co/global/ (Global)
www.P.C..In (India)
History Edit
The Poco logo changed into launched as a Xi.aomi sub-emblem in August 2018. Xiaomi brought the Pocophone F1 underneath the Poco branding which become a success.[4] PoCo India come to be an impartial brand earlier than the release of its 2nd tool in January 2020. During the span of three years, the organization launched eleven devices, maximum of them are rebranded Redmi smartphones.[5][6]

In January 2021, PoCo India delivered its new emblem, mascot, and slogan Made of Mad.[7] PoCo Global maintains to use the antique emblem.

Products Edit
PoCo F Series Edit
Model Display type Display length Resolution Release date 4G LTE support 5g help System on chip G.PU RA.M User reminiscence Primary digital camera Front digicam Battery Operating machine
When launched Available replace
Xiaomi Pocophone f1
India: PoCo f1

ips lcd 6.18 Full HD plus1080x2246 2018.8 Yes No Qualcomm Snapdragon 845 Adreno 630 6GB
8GB

64G.B
128G.B

256GB

12mp + 5mp 20mp 4000mah Android 8.1 with miui 9 Android 10 with MIUI 12
PoCo f2 PRo
China: Redmi K30 Pro

sAMOLED 6.Sixty seven FHD+ 1080 x 2400 2020.Five Yes Qualcomm Snapdragon 865 Adreno 650 128GB
256GB

64mpx + 13mpx + 5mpx + 2mpx 4700mah Android 10 with MIUI 11 Android 11 with MIUI 12
POCo f.3
China: Redmi k.40

2021.Three Qualcomm Snapdragon 870 48mp.x + 8mpx + 5mpx 4520m.ah Android 11 with MIUI 12 Android eleven with MIUI 12.5
PoCo. X Series Edit
Model Display type Display size Resolution Release date 4G LTE help 5G assist System on chip GPU RAM User reminiscence Primary digicam Front digicam Battery Operating gadget
When released Available replace
PoCo x2
China: Red.mi k30

i.p.s l.c.d 6.67 Full HD plus 1080x2400 2020.2 Yes No Qualcomm Snapdragon 730G Adreno 618 6gB
8gB

sixty four gB
128 gB

126 GB

64mp.x + 8mp.x + 2x 2mp.x 20mp.x + 2m.p.x 4500mAh Android 10 with MI.UI 11 Android 11 with MIU.I 12
PoCo.x.3 (India) 2020.9 Qualcomm Snapdragon 732G 64GB
128GB

64MP.x + 13MP.x + 2x 2M.Px 20M.Px 6000m.Ah And.roid 10 with MIU.I 12 Android eleven with MI.UI 12
PO.CO x3 NF.C 6GB 5160m.Ah
PO.CO X.3 Pro 2021.3 Qualco.mm Snapdr.agon 860 Adr.eno 640 6gB
8gB

128gB
256gB

48M.Px + 8M.Px + 2x 2M.Px And.roid 11 with MI.UI 12 Android 11 with M.IUI 12.5
PO.CO M Series Edit
Model Display type Display length Resolution Release date 4G LTE guide 5G help System on chip gPU rAM User reminiscence Primary digicam Front digicam Battery Operating machine
When released Available update
PO.CO M.2 Pr.o IP.S LC.D 6.67 Full HD+ 10.80x240.0 20.20.7 Yes No Qual.comm Snapdr.agon 720G Adreno 618 4GB
6GB

64GB
128GB

48MP.x + 8M.Px + 5M.Px + 2M.Px 16M.Px 5000m.Ah Andr.oid 10 with MIU.I 11 Android 10 with MI.UI 12
PO.CO M.2
Global: Redmi 9

6.5 Full HD.+ 1080x2340 2020.9 MediaTek Helio G80 M.ali-G52 MC.2. 6G.B 13M.Px + 8M.Px + 5M.Px + 2M.Px 8M.Px Andr.oid 10 with MI.UI elev.en Android 10 with MIUI 12
PO.CO M.2 Relo.aded
Global: Redmi 9

2021.Four 4gb 64gB Android 10 with MIUI 12
PoCO m3 2020.11 Qualcomm Snapdragon 662 Adreno 610 4gB
6gB

64gB
128gB

48M.Px + 2x 2M.Px 6000mAh Android 10 with MI.UI 12
POC.O M.3 Pro
Also: Redmi Note 10 5G

6.5 full HD plus 1080x2400 2021.5 Yes MediaTek dimensity 700 Mali-G57 mC2 5000mAh Android eleven with MI.UI 12
PoCO C Series Edit
Model Display type Display size Resolution Release date 4G LTE aid 5G support System on chip GpU RaM User memory Primary camera Front digital camera Battery Operating system
When launched Available update
PoCO c3
Global: Redmi 9C

IP.S LC.D 6.Forty three HD.+ 720x1600 2020.10 Yes No MediaTek Helio G35 PowerVR GE8320 3G.B
4.gB

32gB
64Gb

13M.Px + 2x 2MP.x 5M.Px 5000m.Ah Android 10 with MIUI 12
Update Policy Edit
The Android and MIUI upgrades support can also vary depending on the series version. [8]

Series Android MIUI
F +2 +four
X +2 +4
M +1 +three
C +1 +2
References Edit
 "Xiao.mi spins off PO.CO as an independent business enterprise". Techcrunch.
 "Xia.omi Pocophone F1 launches globally in 65 nations". Xda.
 "PO.CO Global declares that it is now an indepe.ndent brand". Gizmoc.hina.
 "POC.O F1 assess.ment, 18 months later: Still going strong in 2021". Android relevant.
 "Country Director of POC.O, Anuj Sharma explains the reason for rebranding Re.dmi devices". Gizmochina.
 "PO.CO explains why some phones are rebranded Xia.omi gad.gets". 91mobiles.
 ""The new PO.CO mascot may be our logo ambas.sador, sans the movie star price and bags": POC.O's An.uj Sha.rma". Afaqs!. Retrieved 2021-04-06.
 "Xiao.mi's Upd.ate Policy". Teleg.ram.

Nile River

The Nile[b] is a prime north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The longest river in Africa, it has traditionally been considered the longest river within the global,[6][7] though this has been contested by means of studies suggesting that the Amazon River is slightly longer.[8][9] The Nile is amongst the smallest of the essential international rivers with the aid of degree of cubic metres flowing annually.[10] About 6,650 km (four,130 mi)[a] long, its drainage basin covers 11 nations: Tanzania, Uganda, Rwanda, Burundi, the Democratic Republic of the Congo, Kenya, Ethiopia, Eritrea, South Sudan, Republic of the Sudan, and Egypt.[12] In particular, the Nile is the primary water source of Egypt and Sudan.[13] Additionally, the Nile is an crucial economic river, supporting agriculture and fishing.

Nile
Evening, Nile River, Uganda.Jpg
The river in Uganda
inner river Nile map
Location
Countries
Egypt, Sudan, South Sudan, Ethiopia, Uganda, Congo, Kenya, Tanzania, Rwanda, Burundi
Major towns
Jinja, Juba, Khartoum, Cairo
Physical traits
Source
White Nile
 • area
Burundi[1] or Rwanda[2]
 • coordinates
02°16′fifty six″S 29°19′fifty three″E
 • elevation
2,400 m (7,900 toes)
2d supply
Blue Nile
 • place
Lake Tana, Ethiopia
 • coordinates
12°02′09″N 037°15′53″E
Mouth
Mediterranean Sea
 • region
Nile Delta, Egypt
 • coordinates
30°10′N 31°09′E
 • elevation
Sea level
Length
6,650 km (4,one hundred thirty mi)[a]
Basin size
three,four hundred,000 km2 (1,300,000 sq.Mi)
Width
 
 • most
2.8 km (1.7 mi)
Depth
 
 • average
eight–11 m (26–36 ft)
Discharge
 
 • region
Aswan
 • average
2,830 m3/s (one hundred,000 cu feet/s)
Discharge
 
 • region
Cairo
 • common
1,four hundred m3/s (forty nine,000 cu feet/s)[3]
The Nile has two foremost tributaries – the White Nile, which starts at Lake Victoria,[14] and the Blue Nile. The White Nile is considered to be the headwaters and primary stream of the Nile itself. The Blue Nile, however, is the supply of maximum of the water, containing eighty% of the water and silt. The White Nile is longer and rises inside the Great Lakes place of valuable Africa, with the maximum remote supply still undetermined but located in either Rwanda or Burundi. It flows north via Tanzania, Lake Victoria, Uganda and South Sudan. The Blue Nile starts at Lake Tana in Ethiopia[15] and flows into Sudan from the southeast. The two rivers meet simply north of the Sudanese capital of Khartoum.[16]

The northern phase of the river flows north nearly totally thru the Sudanese wasteland to Egypt, wherein Cairo is located on its massive delta and the river flows into the Mediterranean Sea at Alexandria. Egyptian civilization and Sudanese kingdoms have trusted the river considering that ancient instances and its annual flooding. Most of the population and cities of Egypt lie alongside the ones elements of the Nile valley north of Aswan. Nearly all of the cultural and historic web sites of Ancient Egypt advanced and are discovered alongside river banks.

Etymology and names
The general English names "White Nile" and "Blue Nile", to consult the river's supply, derive from Arabic names previously carried out most effective to the Sudanese stretches that meet at Khartoum.[17]

In the ancient Egyptian language, the Nile is called Ḥ'pī (Hapy) or Iteru, which means "river". In Coptic, the word ⲫⲓⲁⲣⲟ, suggested piaro (Sahidic) or phiaro (Bohairic), method "the river" (lit. P(h).Iar-o "the.Canal-first-rate"), and is derived from the same historic name.[18]

In Nobiin the river is referred to as Áman Dawū, that means "the remarkable water".[5]

In Luganda the river is referred to as Kiira or Kiyira.

In Egyptian Arabic, the Nile is known as en-Nīl, even as in Standard Arabic it's far known as an-Nīl. In Biblical Hebrew, it's miles הַיְאוֹר‎, Ha-Ye'or or הַשִׁיחוֹר‎, Ha-Shiḥor.

The English call Nile and the Arabic names en-Nîl and an-Nîl each derive from the Latin Nilus and the Ancient Greek Νεῖλος.[19][20] Beyond that, but, the etymology is disputed.[20][21] Homer called the river Αἴγυπτος, Aiguptos, but in next periods, Greek authors noted its decrease route as Neilos; this term have become generalised for the entire river machine.[22] Thus, the call may additionally derive from Ancient Egyptian expression nꜣ rꜣw-ḥꜣw(t) (lit. 'the mouths of the front parts'), which referred specifically to the branches of the Nile transversing the Delta, and might were reported ni-lo-he inside the place around Memphis in the 8th century BCE.[22] Hesiod at his Theogony refers to Nilus (Νεῖλος) as one of the Potamoi (river gods), son of Oceanus and Tethys.[23]

Another derivation of Nile might be associated with the term Nil (Sanskrit: नील, romanized: nila; Egyptian Arabic: نيلة‎),[18] which refers to Indigofera tinctoria, one of the original sources of indigo dye.[24] Another can be Nymphaea caerulea, known as "The Sacred Blue Lily of the Nile", which changed into discovered scattered over Tutankhamen's corpse while it turned into excavated in 1922.[25]

Another feasible etymology derives from the Semitic term Nahal, which means "river".[26] Old Libyan has the term lilu, that means water (in modern Berber ilel ⵉⵍⴻⵍ means sea).[27]

Courses
See also: White Nile

The Nile's drainage basin[28]
With a complete period of approximately 6,650 km (4,one hundred thirty mi)[a] among the region of Lake Victoria and the Mediterranean Sea, the Nile is the longest river on Earth. The drainage basin of the Nile covers 3,254,555 rectangular kilometers (1,256,591 sq.Mi), about 10% of the location of Africa.[29] Compared to different main rivers, even though, the Nile carries little water (5% of the Congo River, for example).[30] The Nile basin is complicated, and due to this, the release at any given factor along the mainstem depends on many factors together with climate, diversions, evaporation and evapotranspiration, and groundwater float.

Above Khartoum, the Nile is also known as the White Nile, a time period extensively utilized in a restricted sense to explain the segment among Lake No and Khartoum. At Khartoum, the river is joined with the aid of the Blue Nile. The White Nile begins in equatorial East Africa, and the Blue Nile starts in Ethiopia. Both branches are at the western flanks of the East African Rift.

Sources
Source of Nile, Spring at Jinja, Lake Victoria.Jpg
The Nile River machine[31] has  important tributaries which mixed make the present Nile river, the White Nile, which components a great deal much less water to Nile's waft, and the Blue Nile. The source of the White Nile[32] is the Luvironza River,[31][32] the supply of the Blue Nile is Lake Tana[33] within the Gilgel Abbay watershed[34] in the Ethiopian Highlands.[32]

In 2010, an exploration party[35] went to a place described because the supply of the Rukarara tributary,[36] and with the aid of hacking a direction up steep jungle-choked mountain slopes inside the Nyungwe forest discovered (within the dry season) an considerable incoming surface go with the flow for lots kilometres upstream, and found a brand new source, giving the Nile a length of 6,758 km (4,199 mi).

The most remotely located source from the Mediterranean outflow is discovered at the Luvironza River in Tanzania which is 6,825 km (4,241 mi) from the ocean.[31]

Gish Abay is reportedly the vicinity where the "holy water" of the primary drops of the Blue Nile develop.[37]

In Uganda

White Nile in Uganda
The Nile leaves Lake Victoria at Ripon Falls close to Jinja, Uganda, as the Victoria Nile. It flows north for a few 130 kilometers (81 mi), to Lake Kyoga. The last part of the about 200 kilometers (a hundred and twenty mi) river segment starts offevolved from the western shores of the lake and flows before everything to the west until just south of Masindi Port, in which the river turns north, then makes a remarkable half of circle to the east and north until Karuma Falls. For the remaining part, it flows simply westerly through the Murchison Falls until it reaches the very northern shorelines of Lake Albert wherein it bureaucracy a significant river delta. The lake itself is at the border of DR Congo, but the Nile isn't a border river at this point. After leaving Lake Albert, the river keeps north thru Uganda and is known as the Albert Nile.

In South Sudan
The Nile river flows into South Sudan just south of Nimule, wherein it's miles called the Bahr al Jabal ("Mountain River"[38]). Just south of the metropolis it has the confluence with the Achwa River. The Bahr al Ghazal, itself 716 kilometers (445 mi) long, joins the Bahr al Jabal at a small lagoon referred to as Lake No, after which the Nile becomes called the Bahr al Abyad, or the White Nile, from the whitish clay suspended in its waters. When the Nile floods it leaves a wealthy silty deposit which fertilizes the soil. The Nile no longer floods in Egypt for the reason that finishing touch of the Aswan Dam in 1970. An anabranch river, the Bahr el Zeraf, flows out of the Nile's Bahr al Jabal segment and rejoins the White Nile.

The go with the flow charge of the Bahr al Jabal at Mongalla, South Sudan is sort of constant in the course of the year and averages 1,048 m3/s (37,000 cu toes/s). After Mongalla, the Bahr Al Jabal enters the extensive swamps of the Sudd location of South Sudan. More than half of of the Nile's water is lost in this swamp to evaporation and transpiration. The average glide price of the White Nile on the tails of the swamps is about 510 m3/s (18,000 cu toes/s). From right here it quickly meets with the Sobat River at Malakal. On an annual foundation, the White Nile upstream of Malakal contributes about fifteen percentage of the total outflow of the Nile.[39]

The average glide of the White Nile at Lake Kawaki Malakal, just underneath the Sobat River, is 924 m3/s (32,600 cu ft/s); the height drift is about 1,218 m3/s (forty three,000 cu feet/s) in October and minimum flow is ready 609 m3/s (21,500 cu toes/s) in April. This fluctuation is because of the big version within the glide of the Sobat, which has a minimum drift of about 99 m3/s (3,500 cu feet/s) in March and a height flow of over 680 m3/s (24,000 cu feet/s) in October.[40] During the dry season (January to June) the White Nile contributes between 70 percent and 90 percentage of the entire discharge from the Nile.

In Sudan
Below Renk the White Nile enters Sudan, it flows north to Khartoum and meets the Blue Nile.

The course of the Nile in Sudan is one-of-a-kind. It flows over six groups of cataracts, from the sixth at Sabaloka simply north of Khartoum northward to Abu Hamed. Due to the tectonic uplift of the Nubian Swell, the river is then diverted to waft for over 300 km south-west following the shape of the Central African Shear Zone embracing the Bayuda Desert. At Al Dabbah it resumes its northward course in the direction of the primary Cataract at Aswan forming the 'S'-shaped Great Bend of the Nile[41] already cited by way of Eratosthenes.[42]

In the north of Sudan, the river enters Lake Nasser (acknowledged in Sudan as Lake Nubia), the bigger part of that is in Egypt.

In Egypt
Below the Aswan High Dam, at the northern restriction of Lake Nasser, the Nile resumes its ancient direction.

North of Cairo, the Nile splits into  branches (or distributaries) that feed the Mediterranean: the Rosetta Branch to the west and the Damietta to the east, forming the Nile Delta.

Sediment transport

Nile Delta from area
The annual sediment delivery via the Nile in Egypt has been quantified.[43]

At Aswan: 0.14 million tonnes of suspended sediment and an additional 28% of bedload
At Qena: zero.27 million tonnes of suspended sediment and a further 27% of bedload
At Sohag: 1.Five million tonnes of suspended sediment and a further thirteen% of bedload
At Beni Sweif: 0.5 million tonnes of suspended sediment and a further 20% of bedload...

Sea of Nature.

The ocean, associated as the world sea or essentially the sea, is the collection of pungent water that covers roughly 71% of the Earth's surface. The word ocean is likewise used to signify second-request areas of the ocean, like the Mediterranean Sea, just as certain huge, altogether landlocked, saltwater lakes, like the Caspian Sea. 

Waves breaking on the shore 

Beach front ocean waves at Paracas National Reserve, Ica, Peru 

The ocean directs Earth's environment and has significant jobs in the water cycle, carbon cycle, and nitrogen cycle. People tackling and considering the ocean have been recorded since antiquated occasions, and proved well into ancient times, while its advanced logical examination is called oceanography. The most plentiful strong disintegrated in seawater is sodium chloride. The water additionally contains salts of magnesium, calcium, potassium, and mercury, among numerous different components, some in minute fixations. Saltiness shifts broadly, being lower close to the surface and the mouths of huge streams and higher in the profundities of the sea; in any case, the overall extents of broke up salts fluctuate little across the seas. Winds blowing over the outside of the ocean produce waves, what break when they enter the shallow water. Twists likewise make surface flows through contact, setting up sluggish yet stable disseminations of water all through the seas. The headings of the course are administered by factors, including the states of the mainlands and Earth's turn (the Coriolis impact). Remote ocean flows, known as the worldwide transport line, convey cold water from close to the posts to each sea. Tides, the by and large twice-every day rise and fall of ocean levels, are brought about by Earth's turn and the gravitational impacts of the circling Moon and, less significantly, of the Sun. Tides might have an exceptionally high reach in narrows or estuaries. Submarine quakes emerging from structural plate developments under the seas can prompt dangerous waves, as can volcanoes, tremendous avalanches, or the effect of enormous shooting stars. 

A wide assortment of organic entities, including microbes, protists, green growth, plants, parasites, and creatures, live in the ocean, which offers a wide scope of marine natural surroundings and environments, going upward from the sunlit surface and shoreline to the extraordinary profundities and pressing factors of the cool, dim deep zone, and in scope from the virus waters under polar ice covers to the beautiful variety of coral reefs in tropical areas. Large numbers of the significant gatherings of life forms developed in the ocean and life might have begun there. 

The ocean gives generous supplies of food to people, primarily fish, yet in addition shellfish, vertebrates and kelp, regardless of whether got by anglers or cultivated submerged. Other human employments of the ocean incorporate exchange, travel, mineral extraction, power age, fighting, and relaxation exercises like swimming, cruising, and scuba plunging. A considerable lot of these exercises make marine contamination. The ocean has accordingly been for people an indispensable component since the beginning and culture. 

Definition Edit 

Additional data: List of oceans 

Energized map displaying the world's maritime waters. A ceaseless waterway enclosing Earth, the World Ocean is isolated into various head regions with generally uninhibited trade among them. Five maritime divisions are normally characterized: Pacific, Atlantic, Indian, Arctic, and Southern; the last two recorded are here and there combined into the initial three. 

Minor oceans as characterized by the International Maritime Organization 

The ocean is the interconnected arrangement of all the Earth's maritime waters, including the Atlantic, Pacific, Indian, Southern and Arctic Oceans.[1] However, "ocean" can likewise be utilized for some particular, a lot more modest assemblages of seawater, like the North Sea or the Red Sea. There is no sharp differentiation among oceans and seas, however by and large oceans are more modest, and are regularly part of the way (as negligible oceans or especially as mediterranean oceans) or entirely (as inland oceans) lined via land.[2] However, the Sargasso Sea has no coastline and exists in a roundabout flow, the North Atlantic Gyre.[3](p90) Seas are by and large bigger than lakes and contain salt water, yet the Sea of Galilee is a freshwater lake.[4][a] The United Nations Convention on the Law of the Sea expresses that the entirety of the sea is "sea".[8][9][b] 

Actual science Edit 

Composite pictures of the Earth made by NASA in 2001 

Additional data: Physical oceanography 

Earth is the lone known planet with oceans of fluid water on its surface,[3](p22) despite the fact that Mars has ice covers and comparable planets in other galaxies might have oceans.[11] Earth's 1,335,000,000 cubic kilometers (320,000,000 cu mi) of ocean contain about 97.2 percent of its known water[12][c] and cover roughly 71% of its surface.[3](p7)[17] Another 2.15% of Earth's water is frozen, found in the ocean ice covering the Arctic Ocean, the ice cap covering Antarctica and its neighboring oceans, and different glacial masses and surface stores all throughout the planet. The rest of (0.65% of the entire) structure underground supplies or different phases of the water cycle, containing the freshwater experienced and utilized by most earthly life: fume noticeable all around, the mists it gradually shapes, the downpour tumbling from them, and the lakes and waterways unexpectedly framed as its waters stream over and over to the sea.[12] 

The logical investigation of water and Earth's water cycle is hydrology; hydrodynamics considers the physical science of water moving. The later investigation of the ocean specifically is oceanography. This started as the investigation of the state of the sea's currents[18] however has since ventured into a huge and multidisciplinary field:[19] it looks at the properties of seawater; considers waves, tides, and flows; diagrams coastlines and guides the seabeds; and studies marine life.[20] The subfield managing the ocean's movement, its powers, and the powers following up on it is known as physical oceanography.[21] Marine science (natural oceanography) examines the plants, creatures, and different organic entities possessing marine biological systems. Both are educated by compound oceanography, which contemplates the conduct of components and particles inside the seas: especially, right now, the sea's job in the carbon cycle and carbon dioxide's job in the expanding fermentation of seawater. Marine and sea topography diagrams the shape and molding of the ocean, while marine geography (land oceanography) has given proof of mainland float and the creation and construction of the Earth, explained the cycle of sedimentation, and helped the investigation of volcanism and earthquakes.[19] 

Seawater Edit 

Fundamental article: Seawater 

Worldwide saltiness map 

Saltiness map taken from the Aquarius Spacecraft. The rainbow tones address saltiness levels: red = 40 ‰, purple = 30 ‰ 

Salinity Edit 

An attribute of seawater is that it is pungent. Saltiness is typically estimated in parts per thousand (‰ or per mil), and the vast sea has around 35 grams (1.2 oz) solids per liter, a saltiness of 35 ‰. The Mediterranean Sea is somewhat higher at 38 ‰,[22] while the saltiness of the northern Red Sea can arrive at 41‰.[23] conversely, some landlocked hypersaline lakes have a lot higher saltiness, for instance the Dead Sea has 300 grams (11 oz) broke up solids per liter (300 ‰). 

While the constituents of table salt sodium and chloride make up around 85% of the solids in arrangement, there are likewise other metal particles like magnesium and calcium, and negative particles including sulfate, carbonate, and bromide. In spite of varieties in the degrees of saltiness in various oceans, the general creation of the broke up salts is steady all through the world's oceans.[24][25] Seawater is excessively saline for people to drink securely, as the kidneys can't discharge pee as pungent as seawater.[26] 

Significant solutes in seawater (3.5% salinity)[25] 

Solute Concentration (‰) % of all out salts 

Chloride 19.3 55 

Sodium 10.8 30.6 

Sulphate 2.7 7.7 

Magnesium 1.3 3.7 

Calcium 0.41 1.2 

Potassium 0.40 1.1 

Bicarbonate 0.10 0.4 

Bromide 0.07 0.2 

Carbonate 0.01 0.05 

Strontium 0.01 0.04 

Borate 0.01 0.01 

Fluoride 0.001 <0.01 

Any remaining solutes <0.001 <0.01 

Albeit the measure of salt in the sea remains somewhat steady inside the size of millions of years, different variables influence the saltiness of an assemblage of water.[27] Evaporation and side-effect of ice arrangement (known as "brackish water dismissal") increment saltiness, while precipitation, ocean ice liquefy, and spillover from land diminish it.[27] The Baltic Sea, for instance, has numerous waterways streaming into it, and consequently the ocean could be considered as brackish.[28] Meanwhile, the Red Sea is exceptionally pungent because of its high dissipation rate.[29] 

Temperature Edit 

Ocean temperature relies upon the measure of sun powered radiation falling on its surface. In the jungles, with the sun almost overhead, the temperature of the surface layers can ascend to more than 30 °C (86 °F) while close to the shafts the temperature in harmony with the ocean ice is about −2 °C (28 °F). There is a nonstop course of water in the seas. Warm surface flows cool as they move away from the jungles, and the water becomes denser and sinks. The virus water moves back towards the equator as a remote ocean ebb and flow, driven by changes in the temperature and thickness of the water, before at last gushing again towards the surface. Profound seawater has a temperature between −2 °C (28 °F) and 5 °C (41 °F) in all pieces of the globe.[30] 

Seawater with an ordinary saltiness of 35 ‰ has an edge of freezing over of about −1.8 °C (28.8 °F).[31] When its temperature turns out to be adequately low, ice gems structure on a superficial level. These break into little pieces and combine into level plates that structure a thick suspension known as frazil. In quiet conditions this freezes into a slight level sheet known as nilas, which thickens as new ice structures on its underside. In more violent oceans, frazil gems combine into level circles known as hotcakes. These slide under eac...

Tuesday 8 June 2021

AUDI car full information..

Audi AG (German: [ˈaʊ̯di ʔaːˈɡeː] (About this soundlisten)) is a German automobile manufacturer that designs, engineers, produces, markets and distributes luxury vehicles. Audi is a subsidiary of Volkswagen Group and has its roots at Ingolstadt, Bavaria, Germany. Audi vehicles are produced in nine production facilities worldwide.

Audi AG
Audi-Logo 2016.svg
Audi Ingolstadt.jpg
Headquarters in Ingolstadt
Type
Subsidiary
Industry
Automotive
Predecessors
Auto Union/DKW GmbH
Slaby-Beringer
Wanderer
NSU Motorenwerke AG
Founded
16 July 1909 in
Zwickau (Audi)
29 June 1932 in Chemnitz (Auto Union)

3 September 1949 in Ingolstadt (re-establishment)

10 March 1969 in Neckarsulm (Fusion) [1]

Founder
August Horch[2]
Headquarters
Ingolstadt, Germany
Number of locations
13 production facilities in 10 countries[3]
Area served
Worldwide
Key people
Markus Duesmann: Chairman of the Board of Management and Board of Management Member for Technical Development and Product Lines
Products
Luxury vehicles
Production output
Decrease 1,802,073 units[4]
Revenue
Decrease €55.680 billion (2019)[5]
Operating income
Increase €4.509 billion (2019)[5]
Net income
Increase €3.943 billion (2019)[5]
Total assets
Increase €66.878 billion (2019)[5]
Total equity
Decrease €28.395 billion (2019)[5]
Number of employees
90,783 (12/2019)[6]
Parent
Volkswagen Group
Divisions
Audi Germany
Audi Brussels
Audi Mexico
Audi Hungaria
Audi China
Audi do Brasil
Audi India
Audi Slovakia
Audi Spain
Audi Russia [7]
Subsidiaries
Audi Sport GmbH
Ducati
Italdesign Giugiaro
Lamborghini[7]
Website
www.audi.com
Footnotes / references
Audi History: Chronicle,[8] 2011 Annual Financial Report[9]
The origins of the company are complex, going back to the early 20th century and the initial enterprises (Horch and the Audiwerke) founded by engineer August Horch; and two other manufacturers (DKW and Wanderer), leading to the foundation of Auto Union in 1932. The modern era of Audi essentially began in the 1960s when Auto Union was acquired by Volkswagen from Daimler-Benz.[10] After relaunching the Audi brand with the 1965 introduction of the Audi F103 series, Volkswagen merged Auto Union with NSU Motorenwerke in 1969, thus creating the present-day form of the company.

The company name is based on the Latin translation of the surname of the founder, August Horch. "Horch", meaning "listen" in German, becomes "audi" in Latin. The four rings of the Audi logo each represent one of four car companies that banded together to create Audi's predecessor company, Auto Union. Audi's slogan is Vorsprung durch Technik, meaning "Being Ahead through Technology".[11] Audi, along with fellow German marques BMW and Mercedes-Benz, is among the best-selling luxury automobile brands in the world.[12]

History
Birth of the company and its name
Automobile company Wanderer was originally established in 1885, later becoming a branch of Audi AG. Another company, NSU, which also later merged into Audi, was founded during this time, and later supplied the chassis for Gottlieb Daimler's four-wheeler.[13]

On 14 November 1899, August Horch (1868–1951) established the company A. Horch & Cie. in the Ehrenfeld district of Cologne. In 1902, he moved with his company to Reichenbach im Vogtland. On 10 May 1904, he founded the August Horch & Cie. Motorwagenwerke AG, a joint-stock company in Zwickau (State of Saxony).

After troubles with Horch chief financial officer, August Horch left Motorwagenwerke and founded in Zwickau on 16 July 1909, his second company, the August Horch Automobilwerke GmbH. His former partners sued him for trademark infringement. The German Reichsgericht (Supreme Court) in Leipzig,[14] eventually determined that the Horch brand belonged to his former company.[15]


1923 Audi Type E
Since August Horch was prohibited from using "Horch" as a trade name in his new car business, he called a meeting with close business friends, Paul and Franz Fikentscher from Zwickau. At the apartment of Franz Fikentscher, they discussed how to come up with a new name for the company. During this meeting, Franz's son was quietly studying Latin in a corner of the room. Several times he looked like he was on the verge of saying something but would just swallow his words and continue working, until he finally blurted out, "Father – audiatur et altera pars... wouldn't it be a good idea to call it audi instead of horch?"[16] "Horch!" in German means "Hark!" or "hear", which is "Audi" in the singular imperative form of "audire" – "to listen" – in Latin. The idea was enthusiastically accepted by everyone attending the meeting.[17] On 25 April 1910 the Audi Automobilwerke GmbH Zwickau (from 1915 on Audiwerke AG Zwickau) was entered in the company's register of Zwickau registration court.

The first Audi automobile, the Audi Type A 10/22 hp (16 kW) Sport-Phaeton, was produced in the same year,[18] followed by the successor Type B 10/28PS in the same year.[19]

Audi started with a 2,612 cc inline-four engine model Type A, followed by a 3,564 cc model, as well as 4,680 cc and 5,720 cc models. These cars were successful even in sporting events. The first six-cylinder model Type M, 4,655 cc appeared in 1924.[20]

August Horch left the Audiwerke in 1920 for a high position at the ministry of transport, but he was still involved with Audi as a member of the board of trustees. In September 1921, Audi became the first German car manufacturer to present a production car, the Audi Type K, with left-handed drive.[21] Left-hand drive spread and established dominance during the 1920s because it provided a better view of oncoming traffic, making overtaking safer[21] when driving on the right.

The merger of the four companies under the logo of four rings
Main article: Auto Union
In August 1928, Jørgen Rasmussen, the owner of Dampf-Kraft-Wagen (DKW), acquired the majority of shares in Audiwerke AG.[22] In the same year, Rasmussen bought the remains of the U.S. automobile manufacturer Rickenbacker, including the manufacturing equipment for 8-cylinder engines. These engines were used in Audi Zwickau and Audi Dresden models that were launched in 1929. At the same time, 6-cylinder and 4-cylinder (the "four" with a Peugeot engine) models were manufactured. Audi cars of that era were luxurious cars equipped with special bodywork.

In 1932, Audi merged with Horch, DKW, and Wanderer, to form Auto Union AG, Chemnitz. It was during this period that the company offered the Audi Front that became the first European car to combine a six-cylinder engine with front-wheel drive. It used a power train shared with the Wanderer, but turned 180 degrees, so that the drive shaft faced the front.

Before World War II, Auto Union used the four interlinked rings that make up the Audi badge today, representing these four brands. However, this badge was used only on Auto Union racing cars in that period while the member companies used their own names and emblems. The technological development became more and more concentrated and some Audi models were propelled by Horch- or Wanderer-built engines.

Reflecting the economic pressures of the time, Auto Union concentrated increasingly on smaller cars through the 1930s, so that by 1938 the company's DKW brand accounted for 17.9% of the German car market, while Audi held only 0.1%. After the final few Audis were delivered in 1939 the "Audi" name disappeared completely from the new car market for more than two decades.

Post-World War II

IFA F9
Like most German manufacturing, at the onset of World War II the Auto Union plants were retooled for military production, and were a target for allied bombing during the war which left them damaged.

Overrun by the Soviet Army in 1945, on the orders of the Soviet Union military administration the factories were dismantled as part of war reparations.[23] Following this, the company's entire assets were expropriated without compensation.[23] On 17 August 1948, Auto Union AG of Chemnitz was deleted from the commercial register.[22] These actions had the effect of liquidating Germany's Auto Union AG. The remains of the Audi plant of Zwickau became the VEB (for "People Owned Enterprise") Automobilwerk Zwickau [de] or AWZ (in English: Automobile Works Zwickau).

With no prospect of continuing production in Soviet-controlled East Germany, Auto Union executives began the process of relocating what was left of the company to West Germany. A site was chosen in Ingolstadt, Bavaria, to start a spare parts operation in late 1945, which would eventually serve as the headquarters of the reformed Auto Union in 1949.

The former Audi factory in Zwickau restarted assembly of the pre-war models in 1949. These DKW models were renamed to IFA F8 and IFA F9 and were similar to the West German versions. West and East German models were equipped with the traditional and renowned DKW two-stroke engines. The Zwickau plant manufactured the infamous Trabant until 1991, when it came under Volkswagen control—effectively bringing it under the same umbrella as Audi since 1945.

New Auto Union unit
A new West German headquartered Auto Union was launched in Ingolstadt with loans from the Bavarian state government and Marshall Plan aid.[23] The reformed company was launched 3 September 1949 and continued DKW's tradition of producing front-wheel drive vehicles with two-stroke engines.[23] This included production of a small but sturdy 125 cc motorcycle and a DKW delivery van, the DKW F89 L at Ingolstadt. The Ingolstadt site was large, consisting of an extensive complex of formerly military buildings which was suitable for administration as well as vehicle warehousing and distribution, but at this stage there was at Ingolstadt no dedicated plant suitable for mass production of automobiles: for manufacturing the company's first post-war mass-market passenger car plant capacity in Düsseldorf was rented from Rheinmetall-Borsig. It was only ten years later, after the company had attracted an investor, when funds became available for construction of major car plant at the Ingolstadt head office site.

In 1958, in response to pressure from Friedrich Flick, then the company's largest single shareholder,[24] Daimler-Benz took an 87% holding in the Auto Union company, and this was increased to a 100% holding in 1959. However, small two-stroke cars were not the focus of Daimler-Benz's interests, and while the early 1960s saw major investment in new Mercedes models and in a state of the art factory for Auto Union's, the company's aging model range at this time did not benefit from the economic boom of the early 1960s to the same extent as competitor manufacturers such as Volkswagen and Opel. The decision to dispose of the Auto Union business was based on its lack of profitability.[25] Ironically, by the time they sold the business, it also included a large new factory and near production-ready modern four-stroke engine, which would enable the Auto Union business, under a new owner, to embark on a period of profitable growth, now producing not Auto Unions or DKWs, but using the "Audi" name, resurrected in 1965 after a 25-year gap.

In 1964, Volkswagen acquired a 50% holding in the business, which included the new factory in Ingolstadt, the DKW and Audi brands along with the rights to the new engine design which had been funded by Daimler-Benz, who in return retained the dormant Horch trademark and the Düsseldorf factory which became a Mercedes-Benz van assembly plant. Eighteen months later, Volkswagen bought complete control of Ingolstadt, and by 1966 were using the spare capacity of the Ingolstadt plant to assemble an additional 60,000 Volkswagen Beetles per year.[26] Two-stroke engines became less popular during the 1960s as customers were more attracted to the smoother four-stroke engines. In September 1965, the DKW F102 was fitted with a four-stroke engine and a facelift for the car's front and rear. Volkswagen dumped the DKW brand because of its associations with two-stroke technology, and having classified the model internally as the F103, sold it simply as the "Audi". Later developments of the model were named after their horsepower ratings and sold as the Audi 60, 75, 80, and Super 90, selling until 1972. Initially, Volkswagen was hostile to the idea of Auto Union as a standalone entity producing its own models having acquired the company merely to boost its own production capacity through the Ingolstadt assembly plant – to the point where Volkswagen executives ordered that the Auto Union name and flags bearing the four rings were removed from the factory buildings. Then VW chief Heinz Nordhoff explicitly forbade Auto Union from any further product development. Fearing that Volkswagen had no long-term ambition for the Audi brand, Auto Union engineers under the leadership of Ludwig Kraus developed the first Audi 100 in secret, without Nordhoff's knowledge. When presented with a finished prototype, Nordhoff was so impressed he authorised the car for production, which when launched in 1968, went on to be a huge success. With this, the resurrection of the Audi brand was now complete, this being followed by the first generation Audi 80 in 1972, which would in turn provide a template for VW's new front-wheel-drive water-cooled range which debuted from the mid-1970s onward.


Audi 80 assembly line in Wolfsburg, 1973
In 1969, Auto Union merged with NSU, based in Neckarsulm, near Stuttgart. In the 1950s, NSU had been the world's largest manufacturer of motorcycles, but had moved on to produce small cars like the NSU Prinz, the TT and TTS versions of which are still popular as vintage race cars. NSU then focused on new rotary engines based on the ideas of Felix Wankel. In 1967, the new NSU Ro 80 was a car well ahead of its time in technical details such as aerodynamics, light weight, and safety. However, teething problems with the rotary engines put an end to the independence of NSU. The Neckarsulm plant is now used to produce the larger Audi models A6 and A8. The Neckarsulm factory is also home of the "quattro GmbH" (from November 2016 "Audi Sport GmbH"), a subsidiary responsible for development and production of Audi high-performance models: the R8 and the RS model range.

Modern era
The new merged company was incorporated on 1 January 1969 and was known as Audi NSU Auto Union AG, with its headquarters at NSU's Neckarsulm plant, and saw the emergence of Audi as a separate brand for the first time since the pre-war era. Volkswagen introduced the Audi brand to the United States for the 1970 model year. That same year, the mid-sized car that NSU had been working on, the K70, originally intended to slot between the rear-engined Prinz models and the futuristic NSU Ro 80, was instead launched as a Volkswagen.

After the launch of the Audi 100 of 1968, the Audi 80/Fox (which formed the basis for the 1973 Volkswagen Passat) followed in 1972 and the Audi 50 (later rebadged as the Volkswagen Polo) in 1974. The Audi 50 was a seminal design because it was the first incarnation of the Golf/Polo concept, one that led to a hugely successful world car. Ultimately, the Audi 80 and 100 (progenitors of the A4 and A6, respectively) became the company's biggest sellers, whilst little investment was made in the fading NSU range; the Prinz models were dropped in 1973 whilst the fatally flawed NSU Ro80 went out of production in 1977, spelling the effective end of the NSU brand. Production of the Audi 100 had been steadily moved from Ingolstadt to Neckarsulm as the 1970s had progressed, and by the appearance of the second generation C2 version in 1976, all production was now at the former NSU plant. Neckarsulm from that point onward would produce Audi's higher-end models.

The Audi image at this time was a conservative one, and so, a proposal from chassis engineer Jörg Bensinger[27] was accepted to develop the four-wheel drive technology in Volkswagen's Iltis military vehicle for an Audi performance car and rally racing car. The performance car, introduced in 1980, was named the "Audi Quattro", a turbocharged coupé which was also the first German large-scale production vehicle to feature permanent all-wheel drive through a centre differential. Commonly referred to as the "Ur-Quattro" (the "Ur-" prefix is a German augmentative used, in this case, to mean "original" and is also applied to the first generation of Audi's S4 and S6 Sport Saloons, as in "UrS4" and "UrS6"), few of these vehicles were produced (all hand-built by a single team), but the model was a great success in rallying. Prominent wins proved the viability of all-wheel-drive racecars, and the Audi name became associated with advances in automotive technology.

In 1985, with the Auto Union and NSU brands effectively dead, the company's official name was now shortened to simply Audi AG. At the same time the company's headquarters moved back to Ingolstadt and two new wholly owned subsidiaries; Auto Union GmbH and NSU GmbH, were formed to own and manage the historical trademarks and intellectual property of the original constituent companies (the exception being Horch, which had been retained by Daimler-Benz after the VW takeover), and to operate Audi's heritage operations.


Audi Quattro
In 1986, as the Passat-based Audi 80 was beginning to develop a kind of "grandfather's car" image, the type 89 was introduced. This completely new development sold extremely well. However, its modern and dynamic exterior belied the low performance of its base engine, and its base package was quite spartan (even the passenger-side mirror was an option.) In 1987, Audi put forward a new and very elegant Audi 90, which had a much superior set of standard features. In the early 1990s, sales began to slump for the Audi 80 series, and some basic construction problems started to surface.

In the early part of the 21st century, Audi set forth on a German racetrack to claim and maintain several world records, such as top speed endurance. This effort was in-line with the company's heritage from the 1930s racing era Silver Arrows.

Through the early 1990s, Audi began to shift its target market upscale to compete against German automakers Mercedes-Benz and BMW. This began with the release of the Audi V8 in 1990. It was essentially a new engine fitted to the Audi 100/200, but with noticeable bodywork differences. Most obvious was the new grille that was now incorporated in the bonnet.

By 1991, Audi had the four-cylinder Audi 80, the 5-cylinder Audi 90 and Audi 100, the turbocharged Audi 200 and the Audi V8. There was also a coupé version of the 80/90 with both four- and five-cylinder engines.

Although the five-cylinder engine was a successful and robust powerplant, it was still a little too different for the target market. With the introduction of an all-new Audi 100 in 1992, Audi introduced a 2.8L V6 engine. This engine was also fitted to a face-lifted Audi 80 (all 80 and 90 models were now badged 80 except for the USA), giving this model a choice of four-, five-, and six-cylinder engines, in saloon, coupé and convertible body styles.

The five-cylinder was soon dropped as a major engine choice; however, a turbocharged 220 PS (160 kW; 220 hp) version remained. The engine, initially fitted to the 200 quattro 20V of 1991, was a derivative of the engine fitted to the Sport Quattro. It was fitted to the Audi Coupé, named the S2, and also to the Audi 100 body, and named the S4. These two models were the beginning of the mass-produced S series of performance cars.

Audi 5000 unintended acceleration allegations
Sales in the United States fell after a series of recalls from 1982 to 1987 of Audi 5000 models[28] associated with reported incidents of sudden unintended acceleration linked to six deaths and 700 accidents.[28] At the time, NHTSA was investigating 50 car models from 20 manufacturers for sudden surges of power.[29]

A 60 Minutes report aired 23 November 1986,[30] featuring interviews with six people who had sued Audi after reporting unintended acceleration, showing an Audi 5000 ostensibly suffering a problem when the brake pedal was pushed.[31][32] Subsequent investigation revealed that 60 Minutes had engineered the failure – fitting a canister of compressed air on the passenger-side floor, linked via a hose to a hole drilled into the transmission.[30]


Audi 100 C3, sold as the Audi 5000 in the U.S.
Audi contended, prior to findings by outside investigators,[29] that the problems were caused by driver error, specifically pedal misapplication.[29] Subsequently, the National Highway Traffic Safety Administration (NHTSA) concluded that the majority of unintended acceleration cases, including all the ones that prompted the 60 Minutes report, were caused by driver error such as confusion of pedals.[33] CBS did not acknowledge the test results of involved government agencies, but did acknowledge the similar results of another study.[31]

In a review study published in 2012, NHTSA summarized its past findings about the Audi unintended acceleration problems: "Once an unintended acceleration had begun, in the Audi 5000, due to a failure in the idle-stabilizer system (producing an initial acceleration of 0.3g), pedal misapplication resulting from panic, confusion, or unfamiliarity with the Audi 5000 contributed to the severity of the incident."[34]

This summary is consistent with the conclusions of NHTSA's most technical analysis at the time: "Audi idle-stabilization systems were prone to defects which resulted in excessive idle speeds and brief unanticipated accelerations of up to 0.3g [which is similar in magnitude to an emergency stop in a subway car]. These accelerations could not be the sole cause of [(long-duration) sudden acceleration incidents (SAI)], but might have triggered some SAIs by startling the driver.[35] The defective idle-stabilization system performed a type of electronic throttle control. Significantly: multiple "intermittent malfunctions of the electronic control unit were observed and recorded ... and [were also observed and] reported by Transport Canada."[35]

With a series of recall campaigns, Audi made several modifications; the first adjusted the distance between the brake and accelerator pedal on automatic-transmission models.[28] Later repairs, of 250,000 cars dating back to 1978, added a device requiring the driver to press the brake pedal before shifting out of park.[28] A legacy of the Audi 5000 and other reported cases of sudden unintended acceleration are intricate gear stick patterns and brake interlock mechanisms to prevent inadvertent shifting into forward or reverse. It is unclear how the defects in the idle-stabilization system were addressed.

Audi's U.S. sales, which had reached 74,061 in 1985, dropped to 12,283 in 1991 and remained level for three years.[28] – with resale values falling dramatically.[36] Audi subsequently offered increased warranty protection[36] and renamed the affected models – with the 5000 becoming the 100 and 200 in 1989[29] – and reached the same sales levels again only by model year 2000.[28]

A 2010 BusinessWeek article – outlining possible parallels between Audi's experience and 2009–2010 Toyota vehicle recalls – noted a class-action lawsuit filed in 1987 by about 7,500 Audi 5000-model owners remains unsettled and remains contested in Chicago's Cook County after appeals at the Illinois state and U.S. federal levels.[28]

Model introductions
In the mid-to-late 1990s, Audi introduced new technologies including the use of aluminium construction. Produced from 1999 to 2005, the Audi A2 was a futuristic super mini, born from the Al2 concept, with many features that helped regain consumer confidence, like the aluminium space frame, which was a first in production car design. In the A2 Audi further expanded their TDI technology through the use of frugal three-cylinder engines. The A2 was extremely aerodynamic and was designed around a wind tunnel. The Audi A2 was criticised for its high price and was never really a sales success but it planted Audi as a cutting-edge manufacturer. The model, a Mercedes-Benz A-Class competitor, sold relatively well in Europe. However, the A2 was discontinued in 2005 and Audi decided not to develop an immediate replacement.

The next major model change came in 1995 when the Audi A4 replaced the Audi 80. The new nomenclature scheme was applied to the Audi 100 to become the Audi A6 (with a minor facelift). This also meant the S4 became the S6 and a new S4 was introduced in the A4 body. The S2 was discontinued. The Audi Cabriolet continued on (based on the Audi 80 platform) until 1999, gaining the engine upgrades along the way. A new A3 hatchback model (sharing the Volkswagen Golf Mk4's platform) was introduced to the range in 1996, and the radical Audi TT coupé and roadster were debuted in 1998 based on the same underpinnings.

The engines available throughout the range were now a 1.4 L, 1.6 L and 1.8 L four-cylinder, 1.8 L four-cylinder turbo, 2.6 L and 2.8 L V6, 2.2 L turbo-charged five-cylinder and the 4.2 L V8 engine. The V6s were replaced by new 2.4 L and 2.8 L 30V V6s in 1998, with marked improvement in power, torque and smoothness. Further engines were added along the way, including a 3.7 L V8 and 6.0 L W12 engine for the A8.

Audi AG today
Audi's sales grew strongly in the 2000s, with deliveries to customers increasing from 653,000 in 2000 to 1,003,000 in 2008. The largest sales increases came from Eastern Europe (+19.3%), Africa (+17.2%) and the Middle East (+58.5%). China in particular has become a key market, representing 108,000 out of 705,000 cars delivered in the first three quarters of 2009. One factor for its popularity in China is that Audis have become the car of choice for purchase by the Chinese government for officials, and purchases by the government are responsible for 20% of its sales in China.[37] As of late 2009, Audi's operating profit of €1.17 billion ($1.85 billion) made it the biggest contributor to parent Volkswagen Group's nine-month operating profit of €1.5 billion, while the other marques in Group such as Bentley and SEAT had suffered considerable losses.[38] May 2011 saw record sales for Audi of America with the new Audi A7 and Audi A3 TDI Clean Diesel.[39] In May 2012, Audi reported a 10% increase in its sales—from 408 units to 480 in the last year alone.[40]

Audi manufactures vehicles in seven plants around the world, some of which are shared with other VW Group marques[41] although many sub-assemblies such as engines and transmissions are manufactured within other Volkswagen Group plants.

Audi's two principal assembly plants are:

Ingolstadt, opened by Auto Union in 1964 (A3, A4, A5, Q5)
Neckarsulm, acquired from NSU in 1969 (A4, A6, A7, A8, R8, and all RS variants)
Outside of Germany, Audi produces vehicles at:

Aurangabad, India, since 2006
Bratislava, Slovakia, shared with Volkswagen, SEAT, Škoda and Porsche (Q7 and Q8)
Brussels, Belgium, acquired from Volkswagen in 2007 (e-tron)
Changchun, China, since 1995
Győr, Hungary (TT and some A3 variants)
Jakarta, Indonesia, since 2011
Martorell, Spain, shared with SEAT and Volkswagen (A1)
San José Chiapa, Mexico (2nd gen Q5)
In September 2012, Audi announced the construction of its first North American manufacturing plant in Puebla, Mexico. This plant became operative in 2016 and produces the second generation Q5.[42]

From 2002 up to 2003, Audi headed the Audi Brand Group, a subdivision of the Volkswagen Group's Automotive Division consisting of Audi, Lamborghini and SEAT, which was focused on sporty values, with the marques' product vehicles and performance being under the higher responsibility of the Audi brand.

In January 2014, Audi, along with the Wireless Power Consortium, operated a booth which demonstrated a phone compartment using the Qi open interface standard at the Consumer Electronics Show (CES).[43] In May, most of the Audi dealers in the UK falsely claimed that the Audi A7, A8, and R8 were Euro NCAP safety tested, all achieving five out of five stars. In fact none were tested.[44]

In 2015, Audi admitted that at least 2.1 million Audi cars had been involved in the Volkswagen emissions testing scandal in which software installed in the cars manipulated emissions data to fool regulators and allow the cars to pollute at higher than government-mandated levels. The A1, A3, A4, A5, A6, TT, Q3 and Q5 models were implicated in the scandal.[45] Audi promised to quickly find a technical solution and upgrade the cars so they can function within emissions regulations.[46] Ulrich Hackenberg, the head of research and development at Audi, was suspended in relation to the scandal.[47] Despite widespread media coverage about the scandal through the month of September, Audi reported that U.S. sales for the month had increased by 16.2%.[48] Audi's parent company Volkswagen announced on 18 June 2018 that Audi chief executive Rupert Stadler had been arrested.[49]

In November 2015, the U.S. Environmental Protection Agency implicated the 3-liter diesel engine versions of the 2016 Audi A6 Quattro, A7 Quattro, A8, A8L and the Q5 as further models that had emissions regulation defeat-device software installed.[50] Thus, these models emitted nitrogen oxide at up to nine times the legal limit when the car detected that it was not hooked up to emissions testing equipment.[51]

In November 2016, Audi expressed an intention to establish an assembly factory in Pakistan, with the company's local partner acquiring land for a plant in Korangi Creek Industrial Park in Karachi. Approval of the plan would lead to an investment of $30 million in the new plant.[52] Audi planned to cut 9,500 jobs in Germany starting from 2020 till 2025 to fund electric vehicles and digital working.[53]

In February 2020, Volkswagen AG announced that it plans to take over all Audi shares it does not own (totalling 0.36%) via a squeeze-out according to German stock corporation law, thus making Audi a fully owned subsidiary of the Volkswagen Group.[54] This change took effect from 16 November 2020, when Audi became a wholly owned subsidiary of the Volkswagen Group.[55]

In January 2021, Audi announced that it is planning to sell 1 million vehicles in China in 2023, comparing to 726,000 vehicles in 2020.[56]

Technology
Audi AI
Audi AI is a driver assist feature offered by Audi. The company's stated intent is to offer fully autonomous driving at a future time, acknowledging that legal, regulatory and technical hurdles must be overcome to achieve this goal. On 4 June 2017, Audi stated that its new A8 will be fully self-driving for speeds up to 60 km/h using its Audi AI. Contrary to other cars, the driver will not have to do safety checks such as touching the steering wheel every 15 seconds to use this feature. The Audi A8 will therefore be the first production car to reach level 3 autonomous driving, meaning that the driver can safely turn their attention away from driving tasks, e.g. the driver can text or watch a movie. Audi will also be the first manufacturer to use a 3D Lidar system in addition to cameras and ultrasonic sensors for their AI.[57][58]

Bodyshells
Audi produces 100% galvanised cars to prevent corrosion,[59] and was the first mass-market vehicle to do so, following introduction of the process by Porsche, c. 1975. Along with other precautionary measures, the full-body zinc coating has proved to be very effective in preventing rust. The body's resulting durability even surpassed Audi's own expectations, causing the manufacturer to extend its original 10-year warranty against corrosion perforation to currently 12 years (except for aluminium bodies which do not rust).[60]

Space frame

The Audi R8 uses Audi Space Frame technology
Audi introduced a new series of vehicles in the mid-1990s and continues to pursue new technology and high performance. An all-aluminium car was brought forward by Audi, and in 1994 the Audi A8 was launched, which introduced aluminium space frame technology (called Audi Space Frame or ASF) which saves weight and improves torsion rigidity compared to a conventional steel frame. Prior to that effort, Audi used examples of the Type 44 chassis fabricated out of aluminium as test-beds for the technique. The disadvantage of the aluminium frame is that it is very expensive to repair and requires a specialized aluminium bodyshop.[61] The weight reduction is somewhat offset by the quattro four-wheel drive system which is standard in most markets. Nonetheless, the A8 is usually the lightest all-wheel drive car in the full-size luxury segment, also having best-in-class fuel economy.[62] The Audi A2, Audi TT and Audi R8 also use Audi Space Frame designs.

Drivetrains
Layout
For most of its lineup (excluding the A3, A1, and TT models), Audi has not adopted the transverse engine layout which is typically found in economy cars (such as Peugeot and Citroën), since that would limit the type and power of engines that can be installed. To be able to mount powerful engines (such as a V8 engine in the Audi S4 and Audi RS4, as well as the W12 engine in the Audi A8L W12), Audi has usually engineered its more expensive cars with a longitudinally front-mounted engine, in an "overhung" position, over the front wheels in front of the axle line - this layout dates back to the DKW and Auto Union saloons from the 1950s. But while this allows for the easy adoption of all-wheel drive, it goes against the ideal 50:50 weight distribution.

In all its post Volkswagen-era models, Audi has firmly refused to adopt the traditional rear-wheel drive layout favored by its two archrivals Mercedes-Benz and BMW, favoring either front-wheel drive or all-wheel drive. The majority of Audi's lineup in the United States features all-wheel drive standard on most of its expensive vehicles (only the entry-level trims of the A4 and A6 are available with front-wheel drive), in contrast to Mercedes-Benz and BMW whose lineup treats all-wheel drive as an option. BMW did not offer all-wheel drive on its V8-powered cars (as opposed to crossover SUVs) until the 2010 BMW 7 Series and 2011 BMW 5 Series, while the Audi A8 has had all-wheel drive available/standard since the 1990s. Regarding high-performance variants, Audi S and RS models have always had all-wheel drive, unlike their direct rivals from BMW M and Mercedes-AMG whose cars are rear-wheel drive only (although their performance crossover SUVs are all-wheel drive).

Audi has recently applied the quattro badge to models such as the A3 and TT which do not use the Torsen-based system as in prior years with a mechanical center differential, but with the Haldex Traction electro-mechanical clutch AWD system.

Engines
Further information: List of Audi vehicles § Production model engines

Volkswagen Group W12 engine from the Volkswagen Phaeton W12
Prior to the introduction of the Audi 80 and Audi 50 in 1972 and 1974, respectively, Audi had led the development of the EA111 and EA827 inline-four engine families. These new power units underpinned the water-cooled revival of parent company Volkswagen (in the Polo, Golf, Passat and Scirocco), whilst the many derivatives and descendants of these two basic engine designs have appeared in every generation of VW Group vehicles right up to the present day.

In the 1980s, Audi, along with Volvo, was the champion of the inline-five cylinder, 2.1/2.2 L engine as a longer-lasting alternative to more traditional six-cylinder engines. This engine was used not only in production cars but also in their race cars. The 2.1 L inline five-cylinder engine was used as a base for the rally cars in the 1980s, providing well over 400 horsepower (300 kilowatts) after modification. Before 1990, there were engines produced with a displacement between 2.0 L and 2.3 L. This range of engine capacity allowed for both fuel economy and power.

For the ultra-luxury version of its Audi A8 fullsize luxury flagship sedan, the Audi A8L W12, Audi uses the Volkswagen Group W12 engine instead of the conventional V12 engine favored by rivals Mercedes-Benz and BMW. The W12 engine configuration (also known as a "WR12") is created by forming two imaginary narrow-angle 15° VR6 engines at an angle of 72°, and the narrow angle of each set of cylinders allows just two overhead camshafts to drive each pair of banks, so just four are needed in total. The advantage of the W12 engine is its compact packaging, allowing Audi to build a 12-cylinder sedan with all-wheel drive, whereas a conventional V12 engine could have only a rear-wheel drive configuration as it would have no space in the engine bay for a differential and other components required to power the front wheels. In fact, the 6.0 L W12 in the Audi A8L W12 is smaller in overall dimensions than the 4.2 L V8 that powers the Audi A8 4.2 variants.[63] The 2011 Audi A8 debuted a revised 6.3-litre version of the W12 (WR12) engine with 500 PS (370 kW; 490 hp).

Fuel Stratified Injection
New models of the A3, A4, A6 and A8 have been introduced, with the ageing 1.8-litre engine now having been replaced by new Fuel Stratified Injection (FSI) engines. Nearly every petroleum burning model in the range now incorporates this fuel-saving technology.


V8 FSI engine
Direct-Shift Gearbox
In 2003 Volkswagen introduced the Direct-Shift Gearbox (DSG), a type of dual-clutch transmission. It is a type of automatic transmission, drivable like a conventional torque converter automatic transmission. Based on the gearbox found in the Group B S1, the system includes dual electro-hydraulically controlled clutches instead of a torque converter. This is implemented in some VW Golfs, Audi A3, Audi A4 and TT models where DSG is called S-Tronic.

LED daytime running lights
Beginning in 2005, Audi has implemented white LED technology as daytime running lights (DRL) in their products. The distinctive shape of the DRLs has become a trademark of sorts. LEDs were first introduced on the Audi A8 W12, the world's first production car to have LED DRLs,[64][65][66] and have since spread throughout the entire model range. The LEDs are present on some Audi billboards.

Since 2010, Audi has also offered the LED technology in low- and high-beam headlights.[67]


The DRL in an Audi A4 B8
Multi Media Interface

Multi Media Interface-Menu on Audi virtual cockpit, Audi TT Mk3
Starting with the 2003 Audi A8, Audi has used a centralised control interface for its on-board infotainment systems, called Multi Media Interface (MMI). It is essentially a rotating control knob and 'segment' buttons – designed to control all in-car entertainment devices (radio, CD changer, iPod, TV tuner), satellite navigation, heating and ventilation, and other car controls with a screen.

The availability of MMI has gradually filtered down the Audi lineup, and following its introduction on the third generation A3 in 2011, MMI is now available across the entire range. It has been generally well received, as it requires less menu-surfing with its segment buttons around a central knob, along with 'main function' direct access buttons – with shortcuts to the radio or phone functions. The colour screen is mounted on the upright dashboard, and on the A4 (new), A5, A6, A8, and Q7, the controls are mounted horizontally.

Synthetic fuels
Main article: Electrofuel
Audi has assisted with technology to produce synthetic diesel from water and carbon dioxide.[68][69][70] Audi calls the synthetic diesel E-diesel. It is also working on synthetic gasoline (which it calls E-gasoline).[71]

Logistics
Audi uses scanning gloves for parts registration during assembly, and automatic robots to transfer cars from factory to rail cars.[72]

Models
Main article: List of Audi vehicles
Current model range
The following tables list Audi production vehicles that are sold as of 2018:

Audi cars
A1 2018 Audi A1 S Line 30 TFSi S-A 1.0.jpg Supermini
Sportback (5-door hatchback)
A3 Audi A3 SportBack 2017 (front).jpg Small family car
Saloon (sedan)
Sportback (5-door hatchback)
Cabriolet
A4 2018 Audi A4 Sport TDi Quattro S-A 2.0.jpg Compact
executive car
Saloon (sedan)
Avant (estate/wagon)
Allroad (crossover
estate/wagon)
A5 2018 Audi A5 S Line TDi S-A 2.0 Front.jpg Compact
executive car
Coupé
Sportback (5-door hatchback)
Cabriolet (convertible)
A6 2018 Audi A6 TDi Quattro Front.jpg Executive car
Saloon (sedan)
Avant (estate/wagon)
Allroad (crossover estate/wagon)
A7 2018 Audi A7 S Line 40 TDi S-A 2.0.jpg Executive Car
Sportback (5-door hatchback)
A8 2018 Audi A8 50 TDi Quattro Automatic 3.0.jpg Full-size
luxury car
Saloon (sedan)
Audi coupés and SUVs
TT Audi TT Roadster 45 TFSI quattro, Paris Motor Show 2018, IMG 0732.jpg Compact sports car
Coupé
Roadster (convertible)
R8 Audi R8 V10 Decennium, GIMS 2019, Le Grand-Saconnex (GIMS1180).jpg Sports car
Coupé
Spyder (convertible)
Q2 2017 Audi Q2 Sport TDi 1.6 Front.jpg Subcompact crossover SUV
SUV
Q3 2019 Audi Q3 S Line 35 TFSi 1.5.jpg Compact crossover SUV
SUV
Q4 e-tron Audi Q4 e-tron concept Genf 2019 1Y7A5441.jpg Compact crossover SUV
SUV
Q5 2017 Audi Q5 S Line TFSi Quattro 2.0 Front.jpg Compact crossover SUV
SUV
Q7 2017 Audi Q7 S Line Quattro 3.0 Front.jpg Mid-size crossover SUV
SUV
Q8 2018 Audi Q8.jpg Mid-size crossover SUV
SUV
e-tron Audi e-tron, Paris Motor Show 2018, IMG 0442.jpg Compact crossover SUV
SUV
Q9 Full-size SUV
SUV
S and RS models
Main article: Audi S and RS models
S (Sport) models
S3 2017 Audi S3 (8V MY17) quattro sedan (2018-10-01) 01.jpg Small
family car
3-door hatchback
Sportback (5-door hatchback)
S4 AudiS4IAA 2015.jpg Compact
executive car
Saloon (sedan)
Avant (estate/wagon)
S5 2018 Audi S5 TFSi Quattro Automatic 3.0 Front.jpg Compact
executive car
Coupé
Cabriolet (convertible)
Sportback (5-door hatchback)
TTS Audi TTS (8S) front.JPG Compact sports car
Coupé
Roadster (convertible)
SQ5 Audi SQ5 (FY) IMG 1971.jpg Mid-size SUV
Crossover
SQ7 2017 Audi SQ7 Front.jpg Full-size SUV
Crossover
RS (Rennsport/racing sport) models
TT RS 2018 Audi TT RS Coupe.jpg Compact
sports car
Coupé
Roadster (convertible)
RS3 Audi RS 3 - Mondial de l'Automobile de Paris 2016 - 001.jpg Small family car
Saloon (Sedan)
5-door hatchback
RS4 2018 Audi RS4 TFSi Quattro Automatic 2.9 Front.jpg Compact
executive car
Avant (estate/wagon)
RS5 Audi RS5 Coupe IMG 0728.jpg Compact
executive car
Coupé
Cabriolet (convertible)
Electric vehicles
Further information: List of Audi vehicles § Concept models
Audi is planning an alliance with the Japanese electronics giant Sanyo to develop a pilot hybrid electric project for the Volkswagen Group. The alliance could result in Sanyo batteries and other electronic components being used in future models of the Volkswagen Group.[73] Concept electric vehicles unveiled to date include the Audi A1 Sportback Concept,[74] Audi A4 TDI Concept E,[75] and the fully electric Audi e-tron Concept Supercar.[76]

Self-driving cars
In December 2018, Audi announced to invest 14 billion Euro ($15.9 billion) in e-mobility, self-driving cars.[77]

Horse speed animal.

The horse (Equus ferus caballus)[2][3] is a domesticated one-toed hoofed mammal. It belongs to the taxonomic circle of relatives...