why are deserts located where they are.?
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Deserts are generally located in two broad belts either side of the equator. That is because the surface air rises at the equator due to the higher temperatures. As the equatorial air rises it cools and the water condenses out and fall as rain. The cold air then falls back to the surface in those two sub-equatorial belts. The air at this stage is depleted of all moisture, and because the air is falling it creates a high pressure system that prevents rain producing weather systems from developing.\n\nThat is a fairly simplistic summary of some complex weather systems, but it suffices to explain why deserts are located where they are.
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rock, and the depth will be different wherever you decide to dig. there are even deserts that don't have any sand at all, just exposed rock and "normal" earth everywhere.
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Technically they do have soil. Just different kinds.\n\nSoil type is based mostly on texture & composition.\n\nSome deserts have loose sandy soil. Others have desert "pavement" which is essentially hard compacted soil.\n\nThere are 3 major types of soils under which all other subsoils fall. Pedocals are those soils found in the desert & other arid places. It is high in calcite b/c of lack of water filtering through the soil.\n\nThe other two are laterite which is found in humid tropical places that is high in iron oxide & pedalfers which are found in temperate climates. Like I said there are more but these are the main three types.
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Desert - very dry, either hot or cold \nTundra - cool, treeless, and dry \nChaparral or scrub - coastal area with hot, dry summers and mild, cool, rainy winters \nTaiga or Coniferous Forest - cool and dry, with coniferous trees \nTemperate Deciduous Forest - cool and rainy, with deciduous trees \nGrassland - Windy, partly dry sea of grass with few trees, including tropical savanna, prairie, steppe, pampas, etc. \nMountina biomes: there are a lot of different biomes that exist on a mountains, from grasslands at low altitudes, taiga (coniferous forests) below the treeline, and alpine (the same as tundra) \nTemperate Rain Forest - cool and wet \nTropical Rain Forest - warm and very wet \nLand Caves - cool and dark \nWetlands - there are many types of wetlands, including swamps, marshes, moors, bogs, fens, sloughs, etc. \nFreshwater Marsh - a wetland located near creeks, streams, rivers and lakes \nTemperate ponds
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Deserts cover about one fifth of the Earth’s surface and occur where rainfall is less than 50 cm/year. Although most deserts, such as the Sahara of North Africa and the deserts of the southwestern U.S., Mexico, and Australia, occur at low latitudes, another kind of desert, cold deserts, occur in the basin and range area of Utah and Nevada and in parts of western Asia. Most deserts have a considerable amount of specialized vegetation, as well as specialized vertebrate and invertebrate animals. Soils often have abundant nutrients because they need only water to become very productive and have little or no organic matter. Disturbances are common in the form of occasional fires or cold weather, and sudden, infrequent, but intense rains that cause flooding.\n\nThere are relatively few large mammals in deserts because most are not capable of storing sufficient water and withstanding the heat. Deserts often provide little shelter from the sun for large animals. The dominant animals of warm deserts are nonmammalian vertebrates, such as reptiles. Mammals are usually small, like the kangaroo mice of North American deserts.\n\nDesert biomes can be classified according to several characteristics.\nThere are four major types of deserts:\n\n\nHot and Dry\nSemiarid\nCoastal\nCold \n\nHot and Dry Desert\nThe four major North American deserts of this type are the Chihuahuan, Sonoran, Mojave and Great Basin. Others outside the U.S. include the Southern Asian realm, Neotropical (South and Central America), Ethiopian (Africa) and Australian.\nThe seasons are generally warm throughout the year and very hot in the summer. The winters usually bring little rainfall. Temperatures exhibit daily extremes because the atmosphere contains little humidity to block the Sun’s rays. Desert surfaces receive a little more than twice the solar radiation received by humid regions and lose almost twice as much heat at night. Many mean annual temperatures range from 20-25° C. The extreme maximum ranges from 43.5-49° C. Minimum temperatures sometimes drop to -18° C.\n\nRainfall is usually very low and/or concentrated in short bursts between long rainless periods. Evaporation rates regularly exceed rainfall rates. Sometimes rain starts falling and evaporates before reaching the ground. Rainfall is lowest on the Atacama Desert of Chile, where it averages less than 1.5 cm. Some years are even rainless. Inland Sahara also receives less than 1.5 cm a year. Rainfall in American deserts is higher—almost 28 cm a year.\n\nSoils are course-textured, shallow, rocky or gravely with good drainage and have no subsurface water. They are coarse because there is less chemical weathering. The finer dust and sand particles are blown elsewhere, leaving heavier pieces behind.\n\nCanopy in most deserts is very rare. Plants are mainly ground-hugging shrubs and short woody trees. Leaves are “replete” (fully supported with nutrients) with water-conserving characteristics. They tend to be small, thick and covered with a thick cuticle (outer layer). In the cacti, the leaves are much-reduced (to spines) and photosynthetic activity is restricted to the stems. Some plants open their stomata (microscopic openings in the epidermis of leaves that allow for gas exchange) only at night when evaporation rates are lowest. These plants include: yuccas, ocotillo, turpentine bush, prickly pears, false mesquite, sotol, ephedras, agaves and brittlebush.\n\nThe animals include small nocturnal (active at night) carnivores. The dominant animals are burrowers and kangaroo rats. There are also insects, arachnids, reptiles and birds. The animals stay inactive in protected hideaways during the hot day and come out to forage at dusk, dawn or at night, when the desert is cooler.\n\n\nSemiarid Desert\nThe major deserts of this type include the sagebrush of Utah, Montana and Great Basin. They also include the Nearctic realm (North America, Newfoundland, Greenland, Russia, Europe and northern Asia).\nThe su
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Some of the biggest problems facing the desert are habitat destruction, damage from excessive use and pollution.  As technology gets better, people are better able to have a comfortable life in the desert thus opening areas that have not previously been seen as valuable living space.  Despite appearing to be mostly dead, deserts are actually fragile ecosystems and something as simple as footsteps can cause damage that can take years to reverse. There are areas of the Mojave desert where the desert is still scarred from tank training in World War II.  Since deserts were seen as dead places in the past, they have long been used as a dumping ground for toxins which are now seeping into the environment.
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It is very easy Deserts are sand, dunes, diferent kinds of cactus, small bushes, some animals like lizards, insects variety of them, and you can add an Oasis to make it more interest in in the Oasis there are Palms a few, water, you can put a small lake. tents, camels form a caravan in the desert.
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Basically, because of the very low moisture content in the desert air.\nThe energy that comes from the Sun, can be used to heat (raise temperature, sensible heat), or to evaporate water (latent heat). When there is no water to evaporate, it is all used to elevate the temperature, making it so hot.\nAt night, on the other hand, there are no clouds to prevent loss of long wave radiation (heat), so the temperature drops largely.
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Two.  Parts of the Mojave Desert and the Sonoran Desert are in California.
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There are many deserts in world however Principal Deserts of the World are 20 odd.\n\nDetails:\n\nDeserts are arid regions, generally receiving less than ten inches of precipitation a year, or regions where the potential evaporation rate is twice as great as the precipitation.\n\nThe world's deserts are divided into four categories. Subtropical deserts are the hottest, with parched terrain and rapid evaporation. Although cool coastal deserts are located within the same latitudes as subtropical deserts, the average temperature is much cooler because of frigid offshore ocean currents. Cold winter deserts are marked by stark temperature differences from season to season, ranging from 100° F (38° C) in the summer to 10° F (–12° C) in the winter. Polar regions are also considered to be deserts because nearly all moisture in these areas is locked up in the form of ice.\nDesertLocationSizeTopography\nSUBTROPICAL DESERTS\nSaharaMorocco, Western Sahara, Algeria, Tunisia, Libya, Egypt, Mauritania, Mali, Niger, Chad, Ethiopia, Eritrea, Somalia3.5 million sq. mi.70% gravel plains, sand, and dunes. Contrary to popular belief, the desert is only 30% sand. The world's largest nonpolar desert gets its name from the Arabic word Sahra', meaning desert\nArabian Saudi Arabia, Kuwait, Qatar, United Arab Emirates, Oman, Yemen1 million sq. mi.Gravel plains, rocky highlands; one-fourth is the Rub al-Khali (“Empty Quarter”), the world's largest expanse of unbroken sand\nKalahari Botswana, South Africa, Namibia220,000 sq. mi.Sand sheets, longitudinal dunes\nAustralian Desert   \n GibsonAustralia (southern portion of the Western Desert)120,000 sq. mi.Sandhills, gravel, grass. These three regions of desert are collectively referred to as the Great Western Desert—otherwise known as “the Outback.” Contains Ayers Rock, or Uluru, one of the world's largest monoliths\n Great SandyAustralia (northern portion of the Western Desert)150,000 sq. mi.\n Great VictoriaAustralia (southernmost portion of the Western Desert)250,000 sq. mi.\n Simpson and\n  Sturt StonyAustralia (eastern half of the continent)56,000 sq. mi. Simpson's straight, parallel sand dunes are the longest in the world—up to 125 mi. Encompasses the Stewart Stony Desert, named for the Australian explorer\nMojave U.S.: Arizona, Colorado, Nevada, Utah, California54,000 sq. mi.Mountain chains, dry alkaline lake beds, calcium carbonate dunes\nSonoranU.S.: Arizona, California; Mexico120,000 sq. mi.Basins and plains bordered by mountain ridges; home to the Saguaro cactus\nChihuahuanMexico; southwestern U.S.175,000 sq. mi. Shrub desert; largest in North America\nTharIndia, Pakistan175,000 sq. mi.Rocky sand and sand dunes\nCOOL COASTAL DESERTS\nNamibAngola, Namibia, South Africa13,000 sq. mi.Gravel plains\nAtacamaChile54,000 sq. mi.Salt basins, sand, lava; world's driest desert\nCOLD WINTER DESERTS\nGreat BasinU.S.: Nevada, Oregon, Utah190,000 sq. mi.Mountain ridges, valleys, 1% sand dunes\nColorado Plateau\nU.S.: Arizona, Colorado, New Mexico, Utah, Wyoming130,000 sq. mi.Sedimentary rock, mesas, and plateaus—includes the Grand Canyon and is also called the “Painted Desert” because of the spectacular colors in its rocks and canyons\nPatagonianArgentina260,000 sq. mi.Gravel plains, plateaus, basalt sheets\nKara-Kum\nUzbekistan, Turkmenistan135,000 sq. mi.90% gray layered sand—name means “black sand”\nKyzyl-Kum\nUzbekistan, Turkmenistan, Kazakhstan115,000 sq. mi.Sands, rock—name means “red sand”\nIranianIran100,000 sq. mi.Salt, gravel, rock\nTaklamakanChina105,000 sq. mi.Sand, dunes, gravel\nGobiChina, Mongolia500,000 sq. mi.Stony, sandy soil, steppes (dry grasslands)\nPOLAR\nArcticU.S., Canada, Greenland, Iceland, Norway, Sweden, Finland, Russia5.4 million sq. mi.Snow, glaciers, tundra\nAntarcticAntarctica5.5 million sq. mi.Ice, snow, bedrock
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because of \n1. it's climate and placing in south of Asia.\n2. being nearby India ocean.\n3. ENDEAVOR of it's people.\n4. PROFUSION of mountains,rivers,etc
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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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France doesn't have a desert. o_o;; They are suprisingly very green.\n\nMajor range is the Alps boarding italy and france.\n\nMajor rivers are the Siene, The Rhine, The Rhone.
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Southern California for one. It can be arid during the day and cool at night, due to the nearby ocean breezes.  Not quite as cool as you go more inland.
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why is this question in Geography?
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It is the place where the species was developed. That determines that each specie requires determined conditions to grow at optimal rates. I.e. eucaliptus requires a lot of water, so you will not find it in a dessert. \nIf you plant a tree outside its habitat it may not grow as much as in its habitat. It may inclusive die.
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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.