which is the world's largest desert ?
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The largest (nonpolar) desert in the world is the Sahara, in north Africa, which spans an area measured at roughly 3.5 million square miles.
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The LONGEST river in the world is the Nile River.  The LARGEST is the Amazon River.
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The world's largest lake is the salty Caspian Sea at 143,200 square miles (370,886 km2). The Caspian Sea is surrounded by Russia, Azerbaijan, Iran, Turkmenistan, and Kazakhstan.
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At 840,000 square miles (2,175,590 km2), Greenland is the world's largest island.\n\nAlthough Australia also meets the definition of an island (a piece of land surrounded by water), it is large enough to be considered its own continent.
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I think that the Garden of Eden was once located where the Sahara Desert is today.  I also believe that Eden was  or was moved to a differnt dimension beyond the veil of this world.  An angel of fire guards the entrance to the Garden against any attempted "return" and that is why the area is now a desert.
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Answer: At 10,390,000 sq km, it is the fifth largest continent\n\nAsia         44 310 000\nAfrica   30 300 000\nNorth America 24 480 000\nSouth America 17 840 000\nAntarctica 13 720 000\nEurope         10 390 000\nAustralia  8 500 000
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Depends on which desert.  I live in Albuquerque NM, which is in a desert.  We have a vast (but shrinking) reserve of water under the ground.\n\nAlso, the largest body of fresh water in the world, Lake Vostok in Antartica is burried under miles of ice in a desert area.
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The Patagonian Desert.
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The Sahara is the world's largest non-polar desert, over 9,000,000 km² (3,500,000 mi²), about the same size as the United States. \n\nThe United States's total area is 3,718,711 square miles (9,631,418 km²), of which land makes up 3,537,438 square miles (9,161,923 km²) and water makes up 181,273 square miles (469,495 km²).\n\nSo, in this comparison, the United States is larger.
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In geography, a desert is a landscape form or region that receives little precipitation. As a consequence, deserts have a reputation for supporting very little life. Compared to wetter regions this may be true, although upon closer examination, deserts often harbor a wealth of life that usually remains hidden (especially during the daylight) to preserve moisture. Approximately one-third of Earth's land surface is desert.\n\nThe world's great deserts were formed by natural processes interacting over long intervals of time. During most of these times, deserts have grown and shrunk independent of human activities. Paleodeserts, large sand seas now inactive because they are stabilized by vegetation, extend well beyond the present margins of core deserts, such as the Sahara. In some regions, deserts are separated sharply from surrounding, less arid areas by mountains and other contrasting landforms that reflect basic structural differences in the regional geology. In other areas, desert fringes form a gradual transition from a dry to a more humid environment, making it more difficult to define the desert border.\n\nThese transition zones have very fragile, delicately balanced ecosystems. Desert fringes often are a mosaic of microclimates. Small hollows support vegetation that picks up heat from the hot winds and protects the land from the prevailing winds. After rainfall the vegetated areas are distinctly cooler than the surroundings. In these marginal areas, human activity may stress the ecosystem beyond its tolerance limit, resulting in degradation of the land. By pounding the soil with their hooves, livestock compact the substrate, increase the proportion of fine material, and reduce the percolation rate of the soil, thus encouraging erosion by wind and water. Grazing and the collection of firewood reduces or eliminates plants that help to bind the soil.\nRio Puerco Basin of central New Mexico\n\nOvergrazing has made the Rio Puerco Basin of central New Mexico one of the most eroded river basins of the American West and has increased the high sediment content of the river (photograph by Terrence Moore).\n\nThis degradation of formerly productive land-- desertification--is a complex process. It involves multiple causes, and it proceeds at varying rates in different climates. Desertification may intensify a general climatic trend toward greater aridity, or it may initiate a change in local climate.\n\nDesertification does not occur in linear, easily mappable patterns. Deserts advance erratically, forming patches on their borders. Areas far from natural deserts can degrade quickly to barren soil, rock, or sand through poor land management. The presence of a nearby desert has no direct relationship to desertification. Unfortunately, an area undergoing desertification is brought to public attention only after the process is well underway. Often little or no data are available to indicate the previous state of the ecosystem or the rate of degradation. Scientists still question whether desertification, as a process of global change, is permanent or how and when it can be halted or reversed
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I believe that would be Davao City in the Phillipines.  With a total land area of 244,000 hectares, Davao is considered the largest city in the world. \n\nI hope this helps.
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this is kind of a trick question as it depends on who you ask and what you mean by largest\n\ngenerally hydra is considered the largest, as it is the longest and streches the length of 172 full moons placed side by side.\n\nbut it is in the southern hemisphere so many people in the northern hemisphere (mostly americans) don't know about it and say that orion is the largest.\n\nand orion is the largest constelllation in the northern hemisphere.\n\nnow if by largest you mean distance and not just area of the sky well then that is different again.\n\nbut just go with hyda, that is what I do.
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The middle east is mostly arid. The other three have widely contrasting terrains.
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The biggest scorcher ever noted was on September 13, 1922, in El Azizia (also known as Al 'Aziziyah), Libya, when the mercury hit 136 degrees Fahrenheit. El Azizia is near the Sahara desert, so it's no wonder the place gets so hot. Temperatures have likely gotten even hotter in the actual desert, but weather stations aren't there to record it.
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A tropical desert consists of barren land over which rainfall is too limited to support vegetation. So why are such desolate and hostile places, like deserts, important to study? \n\nFirstly, desert studies help us predict possible future changes to the environment and how to avoid damaging it. In his book The Desert of Southeast Arabia, Ken Glennie takes us on a journey back in time to when Arabia was a much greener place, and he explains how global climate made it so barren.\n\nSecondly, in many parts of the world, such as Oman, Saudi Arabia, Europe’s North Sea and the United States, hydrocarbons are found in ancient dune sand reservoirs. Can we unravel the depositional and stratigraphical intricacies of these ancient gas- and oil-bearing reservoirs by studying modern deserts? Ken pioneered the answer to this question with his studies of both modern deserts and the reservoirs of the Permian Rotliegend Red Beds of northwest Europe. \n\nKen started writing this book 10 years ago for students; this is one reason for the extensive Glossary at the back. After many modifications and revisions, his book now provides a different perspective to a well-known topic. Its simplicity, detailed descriptions and illustrations will undoubtedly appeal to students, desert travelers and scientists. Of great value, especially when used in conjunction with studies on the ground, are the satellite images (Landsat) seen here in spectacular colour. None of these images, however, can replace seeing the desert rocks and sediments first hand. In this book, Ken shares his vast knowledge of the Arabian Desert, and exquisite collection of photos taken on the ground and from the air.
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Antarctica is the largest "cold" desert.  YES,  it is classified as a desert! It doesn't get rainfall that plants can use it only gets snow.\n\nThe largest hot desert would be the sahara in northern Africa.
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What exactly is the question? What about animal life in tropical desert? I'll assume you mean "What animals live in tropical deserts?"\n\n-Camel\n-Antelope\n-Gazelle\n-Ostrich\n-Hyena\n-Jackal\n-Hedgehog\n-Fox\n-Owl\n-Vulture\n-Various rodents\n-Viper\n-Lots of different kinds of reptiles, insects, birds, and arachnids\n-Llama