The humps store fat. Brazil, the United States, Canada, China, Australia, and the Democratic Republic of Congo also have a largest forest area more than 100 million hectares each. In northern China, growing urbanization, which left much of the land unprotected against wind erosion and the buildup of sediment from the surrounding desert, created a desertification problem, prompting the government to build a "great green wall" as a hedge against encroaching desert. With little vegetation to block it, the wind can carry sand and dust across entire continents and even oceans. This is roughly equal to the area of Spain. These spinning columns of dirt can rise hundreds of feet in the air. Climate change also plays a significant role, increasing the risk of drought. Tha Lithosphere 150 + MCQs Rural Israeli communities called kibbutzim rely on aquifers to furnish water for crops and even fish farming in the dry Negev Desert. The booming Inland Empire of southeastern California is made up of deserts (the Mojave and the Sonoran) that rely on water for agriculture, industry, and residential development. The descending air warms up, making it difficult for clouds to form.Death Valley, in the U.S. states of California and Nevada, is a rain shadow desert. A cloudburst may bring as much as 25 centimeters (10 inches) of rain in a single hourthe only rain the desert gets all year.Desert humidity is usually so low that not enough water vapor exists to form clouds. 2005, 2006, 2007, and 2009the highest surface temperature on Earth was found in the Lut Desert. The distribution of trees across the world is shown in the interactive map. On the other hand, every few years, an unusually rainy period can produce "super blooms," where even the Atacama becomes blanketed with wildflowers.Desert Animals and PlantsDesert animals have evolved ways to help them keep cool and use less water. Our World In Data is a project of the Global Change Data Lab, a registered charity in England and Wales (Charity Number 1186433). This is around one-quarter (26%) of total (both habitable and uninhabitable) land area. The temperature of a city's surface is influenced by many factors, including human-dependent ones that can be shaped, such as the urban density, the condition of urban vegetation, the presence of urban water bodies, and soil moisture. Consider the following statements made by two students debating why the oceanic and continental plates move: Student 1: The plates are moving because the mantle material is constantly moving. The area used for livestock farming in particular is equal in area to the worlds forests. "We found that only 2.8% of the terrestrial surface of the planet is represented in areas of 10,000 km2 or larger with low human footprint, no known species loss and no species known to be. People have adapted to life in the desert for thousands of years.One thing all deserts have in common is that they are arid, or dry. With little vegetation to anchor it, the thin topsoil quickly eroded. Global deserts occupy approximately one quarter of the Earth's land surface [Ezcurra, 2006].This ratio of deserts to global land area has been projected to increase with global warming [Huang et al., 2015].Desertification in the semiarid regions in the past several decades has contributed a negative forcing by reflecting more solar radiation, equivalent to ~20% of the global . In existing deserts, some species are in peril because of climate change. These activities include overgrazing of livestock, deforestation, overcultivation of farmland, and poor irrigation practices. Some animals, like the desert tortoise in the southwestern United States, spend much of their time underground. Number of trees per square kilometer (km), Country-by-country: Forests across the world. Licenses: All visualizations, data, and articles produced by Our World in Data are open access under the Creative Commons BY license. Populations at resorts like Palm Springs, California, and Las Vegas, Nevada, have boomed. Previous visualizations have looked at forests in terms of the area they cover. People have damaged forests . But in California, the iconic Joshua treethe oldest found was 1,000 years oldmay not survive a hotter climate, scientists warn. Heres how to see this increasingly rare phenomenonresponsibly. Another recent study found that the same level of warming would result in "aridification," or drying out, of up to 30 percent of Earth's land surface. The amount of evaporation in a desert often greatly exceeds the annual rainfall. FAO said the creation of the new database marks a "major improvement" in information regarding the physical characteristics of the Earth's surface. However, polar deserts (Antarctica and Greenland) cover around 5 milion km - this means an area larger than all the countries of the European Union together. Other plants, such as cacti, have special means of storing and conserving water.Deserts, Land Use, and Climate ChangeSome of the world's semiarid regions are turning into desert at an alarming rate. Heres how different cold and flu drugs work, This desert oasis is a time capsule of Egypts grand past, This mysterious son of a witch founded Glasgow, Singapores art and culture scene is a love letter to its city, An adventure across Abu Dhabis diverse landscapes, Photograph by Jonas Bendiksen, Nat Geo Image Collection. Over the last few centuries, this has changed dramatically: wild habitats have been squeezed out by turning it into agricultural land. Newsletter. The ground heats the air so much that air rises in waves you can actually see. A jackrabbits long ears contain blood vessels that release heat. Naturally regenerated forest where there are clearly visible indications of human activities. Wind builds dunes that rise as high as 180 meters (590 feet). Desert are any region on Earth that can have a moisture deficit over the course of a year. Mars orbits our Sun, a star. Local desert communities can divert rivers on a smaller scale. b. But what percentage of the Earths land surface is desert? About 90 major, inhabited oases dot the Sahara. Between 1958 and 1971, the government of Egypt constructed a massive dam on the Upper Nile (the southern part of the river, near Egypts border with Sudan). Global warming is the most current instance of climate change. But what about the number of trees that exist globally and by country? If we rewind 1000 years, it is estimated that only 4 million square kilometers - less than 4% of the world's ice-free and non-barren land area was used for farming. Many desert animals, such as the fennec fox (Vulpes zerda), are nocturnal, coming out to hunt only when the brutal sun has descended. Some weather stations in the Atacama have never recorded a drop of rain.Rain Shadow DesertsRain shadow deserts exist near the leeward slopes of some mountain ranges. Xerocoles include species of insects, reptiles, birds, and mammals. This visualization looks at the breakdown of forests by type. Camels can go for weeks without water, and their nostrils and eyelashes can form a barrier against sand. 1996 - 2022 National Geographic Society. As the muddy water roars downhill, it cuts deep channels, called arroyos or wadis. Heres how to save yours from ending up in a landfill. Deserts are extremely dry environments that are home to well-adapted plants and animals. Sometimes, rock is carved into tablelike formations such as mesas and buttes. Similar lush conditions existed as recently as 25,000 years ago. An abaya is a sleeveless cloak that protects the wearer from dust and heat. The Nile River ecosystem dominates the eastern part of the Sahara Desert, for instance. The resulting cooler, drier air mass moves away from the Equator. Russia which has the largest forest area is home to one-fifth of global forest area. This process, known as desertification, is not caused by drought, but usually arises from deforestation and the demands of human populations that settle on the semi-arid lands. In others, populations of key animals have shrunk. Can new ecotourism efforts turn things around? See which countries are gaining forest though natural forest expansion and afforestation. Elephants, gazelles, rhinos, giraffes, and people used stream-fed pools and lakes.There were three or four other moist periods in the Sahara. A turban is similar to a kaffiyeh, but wrapped around the head instead of being secured with an agal. About four billion tons end up in the atmosphere and two billion tons dissolve in the ocean. At first that sounds like a lot and it is. It also stores water in a manmade lake, Lake Nasser, to protect the countrys communities and agriculture against drought.Construction of the Aswan High Dam was a huge engineering project. Far from being barren wastelands, deserts are biologically rich habitats with a vast array of animals and plants that have adapted to the harsh conditions there. Desert agriculture, including cotton production, demanded a large portion of the Colorado. People who migrate to the warm, dry desert for the winter and return to more temperate climates in the spring are sometimes called snowbirds.In rural areas, hot days turn into cool nights, providing welcome relief from the scorching sun. These 6 Viking myths are compelling, but are they true? Some plants have adapted to the arid climate by growing long roots that tap water from deep underground. In terms of hot deserts it is Sahara which is the largest desert but in terms of cold deserts Antarctica is the world's largest desert. Yet more than one billion people, one-sixth of the Earth's population, actually live in desert regions. A new diet that tricks your body into thinking its fasting may have similar benefits. Dunes migrate constantly with the wind. At night, these areas cool quickly because they lack the insulation provided by humidity and clouds. People often use the adjectives hot, dry, and empty to describe deserts, but these words do not tell the whole story. Imagine a world without water. By the time air masses from coastal areas reach the interior, they have lost all their moisture. Nomadic cultures are those that do not have permanent settlements. The Hohokam used the canals to irrigate their crops. In countries like Yemen, artificial wadis can carry enough water for whitewater rafting trips during certain times of the year.When deserts and water supplies cross state and national borders, people often fight over water rights. This would mean that there would be no more coral reefs, no more marine life, and no more waves . Copics markers Oct 19, 2022 henry 4570 side gate new balance 574 classic All of the Copic tutorials listed above are focused on using the pens on paper (in most cases, coated paper designed for use with . If they don't survive, that could affect species such as the yucca moth, which lays its eggs inside the Joshua tree flower. Sugar cane is a very water-intensive crop mostly harvested in tropical regions. Humanoids known as Lyrans have existed long before Earth's recorded history. Air blowing toward shore, chilled by contact with cold water, produces a layer of fog. Rainwater, including water from flash floods, collects in large depressions called basins. How was Rome founded? And among insects, the Namib desert beetle (Stenocara gracilipes) can harvest fog from the air for water. The study analyzed three factors to assess the integrity and intactness of Earth's ecosystems. In other words, about 30 percent of incoming solar radiation is reflected back into space and 70 percent is absorbed. - has been the . Tents can be rolled up and transported on pack animals (usually horses, donkeys, or camels). Many escape the heat in cool burrows they dig in the ground. However, the results for these types of restoration efforts so far have been mixed. Plants grow, bloom, produce new seeds, and die, often in a short span of time. That might sound like a surprisingly large amount, but thats based on the official definition of a desert. It has a surface area of 7.48 x 10 7 km 2, which is only about 15% of Earth's surface area. 50 percent c. about 10 percent d. about 25 percent d. about 25 percent 2. An abundance of rain in California has set the stage for an epic sea of flowers this spring. Its a popular practice, and research shows it has real health benefits. Source. We get that the four arid climates (group B), add up to 4.401 10 7 k m 2 of a total of 1.527 10 8 k m 2 inventoried in the dataset (A good match for the figure of of global land area of 1.489 10 8 k m 2 listed by wikipedia ), leading to a grand total of 28.8% of Earth's land surface corresponding to arid climates. How much of the earth's land surface is covered by glaciers and deserts? Since the 1960s, Lake Chad has shrunk to half its size. But in cities, structures like buildings, roads, and parking lots hold on to daytime heat long after the sun sets. The majority of the desert takes place in the area band situated along the 30 degrees latitude in North and 30 degrees latitude in the south. Sand lizards, native to the deserts of Europe and Asia, are nicknamed dancing lizards because of the way they quickly lift one leg at a time off the hot desert sand. Most experts agree that a desert is an area of land that receives no more than 25 centimeters (10 inches) of precipitation a year. This degradation tends to be driven by a number of factors, including urbanization, mining, farming, and ranching. For information on user permissions, please read our Terms of Service. They look like tiny tornadoes, but they start on the ground rather than in the sky. You cannot download interactives. Dromedary camels, native to the Arabian and Sahara deserts, can lose up to 30 percent of their body weight without harm. 1. Deserts are areas that receive very little precipitation. A new diet that tricks your body into thinking its fasting may have similar benefits. That includes the Antarctic Desert which is the largest desert on earth. These drylands account for more than 40 percent of the world's terrestrial surface area. The largest hot desert in the world, northern Africa's Sahara, reaches temperatures of up to 122 degrees Fahrenheit (50 degrees Celsius) during the day. The Dead Sea has had flourishing spas since the time of King David.Air transportation and the development of air conditioning have made the sunny climate of deserts even more accessible and attractive to people from colder regions. The plants soak up water quickly and store it in their cells. Desertification usually happens in semi-arid areas that border deserts.Human activities are a primary cause of desertification. If you have questions about licensing content on this page, please contact ngimagecollection@natgeo.com for more information and to obtain a license. Includes selectively logged-over areas, areas regenerating following agricultural land use, areas recovering from human-induced fires, etc., Forest predominantly composed of trees established through planting and/or deliberate seeding.. We see that Europe dominated by forests across Russia holds the greatest share of global forests. Drilling into aquifers provides water for drinking, agriculture, industry, and hygiene. How much of the earth's land surface is desert? Alternatively, for the purposes of agricultural statistics, the term often has a more precise definition: Arable land is the land under temporary agricultural crops (multiple-cropped areas are counted only once), temporary meadows for mowing or pasture, land under market . You have permission to use, distribute, and reproduce these in any medium, provided the source and authors are credited. Forests account for a little over one-third (38%) of habitable land area. It is estimated that 68% of the Earth's land exists in the Northern Hemisphere, while 32% is located in the Southern Hemisphere. A place that receives less than 25 centimeters (10 inches) of rain per year is considered a desert. Mohenjo-daro is now a part of the vast Thar and Cholistan deserts.Most of Earths deserts will continue to undergo periods of climate change.Desert CharacteristicsHumiditywater vapor in the airis near zero in most deserts. Help us do this work by making a donation. This process, known as desertification, is not caused by drought, but usually arises from deforestation and the demands of human populations that settle in semiarid lands. A sensor aboard NASA's Terra satellite is now collecting detailed measurements of how much sunlight the earth's surface reflects back up into the atmosphere. [/caption] Knowledge on this subject allows for improving the urban climate through better planning and construction of urban infrastructure and adapting cities to . Deserts may seem lifeless, but in fact many species have evolved special ways to survive in the harsh environments. Earth's surface gained 115,000 km 2 of water and 173,000 km 2 of land over the past 30 years, including 20,135 km 2 of water and 33,700 km 2 of land in coastal areas. There are over 510 million square kilometers of area on the surface of Earth but less than 30% of this is covered by land. Can fasting help you live longer? Although humidity is high, the atmospheric changes that normally cause rainfall are not present. Deserts cover more than one-fifth of the Earth's land area, and they are found on every continent. That's right, an area doesn't have to be hot to qualify it just needs to lose more moisture than it gains. If all of the world's water was poured on the contiguous United States, it would cover the land to a depth of about 107 miles (145 kilometers). You cannot download interactives. a. less than 3 percent b. When patches of ground get very hot, the heated air above them begins to rise and spin. They estimated that there were approximately 3.04 trillion trees in the world. The earth would look vastly different than the one we know today. While interpretations of the term desertification vary, the concern centers on human-caused land degradation in areas with low or variable rainfall known as drylands: arid, semi-arid, and sub-humid lands. The highest temperature on Earth was recorded there:56.7 C (134.1 F).The largest polar desert is Antarctica, at 13 million square kilometers (5 million square miles). A similar effort is underway in northern China, with the government planting trees along the border of the Gobi desert to prevent it from expanding as farming, livestock grazing, and urbanization, along with climate change, removed buffering vegetation. A large factor in determining whether a biome is a desert is precipitation. 1. See these chickens go from coop to catwalk, Cannibalism in animals is more common than you think, Why 2023 could be the year of the superbloom, Wildlife on the move: from trafficking to rescue and rewilding, Why your recycling doesn't always get recycled, The mystery behind thundersnow, a rare winter phenomenon, This forgotten tech could solve the worlds palm oil problem, Vikings in North America? Overgrazing and deforestation remove plants that anchor the soil. Of the freshwater on Earth, much more is stored in the ground than is available in rivers and lakes. The audio, illustrations, photos, and videos are credited beneath the media asset, except for promotional images, which generally link to another page that contains the media credit. Cacti are often thought of as a stereotypical desert plant, but they are rarely the dominant species in an area of desert. Global vegetation greening during recent decades has been observed from various remote sensing data. It is designated by the symbol . Are these boots made from endangered elephants? This interactive map shows the total area of forest cover, as measured in hectares (ha). More than 30 percent of the grasslands of Argentina, Chile, and Bolivia are faced with desertification.People often overuse natural resources to survive and profit in the short term, while neglecting long-term sustainability. The average American produces almost five pounds of waste every day. While land degradation has occurred throughout history, the pace has accelerated, reaching 30 to 35 times the historical rate, according to the United Nations. Winds at speeds of about 100 kilometers per hour (60 miles per hour) sweep through some deserts. As a result, wind and water erode the nutrient-rich topsoil. This often produces several human health problems that range from malnutrition, respiratory disease caused by dusty air, and other diseases stemming from a lack of clean water. Small pores in the leaves, called stomata, take in carbon dioxide. Less than 30% of the 510 million square kilometers of area on the Earth's surface is covered by land. But some deserts are always cold, like the Gobi desert in Asia and the polar deserts of the Antarctic and Arctic, which are the world's largest. 6. These areas exist under a "moisture deficit," which means they can frequently lose more moisture through evaporation than they receive from annual precipitation. The extent to which people have made changes to the land, the number of animal species lost from. The rate of evaporation is high enough to remove much of the surface water before it can be absorbed by the ground. Figs, olives, and oranges thrive in desert oases and have been harvested for centuries.Some desert areas rely on resources brought from more fertile areasfood trucked in from distant farmlands or, more frequently, water piped from wetter regions. Some plants have adapted to the arid climate by growing long roots that tap water from deep underground. 3 Longer Days One day on Mars takes a little over 24 hours. This art style formally termed as Land Art gained prominence in 1960s and 70s United States, in the context of the rise of the environmental movement amidst civil rights and antiwar . This can reduce the already limited plant life in deserts.Climate change also affects rainfall patterns. The most notable desert resource in the world is the massive oil reserves in the Arabian Desert of the Middle East. Continents Located in the Northern Hemisphere Asia What percentage of Earth is desert? This whirling column of hot air picks up dust and dirt. The percentage of land vertebrates that face extreme events totalling over half a year for the projections SSP3-7.0 and SSP2-4.5 is 3.5% (1,178 species), and 1.2% (437 species), respectively . But the region can go decades without rainfall. A state report says there is insufficient groundwater to support hundreds of thousands of homes planned for west of Phoenix. Between the moist periods came periods of dryness much like todays.The Sahara is not the only desert to have dramatic climate change. Desert plants may have to go without fresh water for years at a time. Camels, nicknamed ships of the desert, are widely used for transportation, meat, and milk in the Maghreb (a region in Northwest Africa), the Middle East, and the Indian Subcontinent.People and the DesertAbout 1 billion people live in deserts. They sleep through the hot days and do their hunting and foraging at night.
The yellow bloom of a prickly pear cactus brightens this view of a California . Satellite images compiled by scientists at the University of Wisconsin-Madison show roughly 17.6 million square kilometers (6.8 million square miles) used to grow crops, with between 32 and 36 million square kilometers (12 and 14 million square miles) used to raise livestock. poses a threat to some of the 660 bee species. Of the total Earth's surface, approximately 20 percent is covered with deserts. However, sugar cane is also harvested in the deserts of Pakistan and Australia. Desert Environments: Desert environments can be hot or cold with varying degrees of flora and fauna. The world's primary feudal landowner is Queen Elizabeth II. An abundance of rain in California has set the stage for an epic sea of flowers this spring. Forests account for a little over one-third (38%) of habitable land area. If a media asset is downloadable, a download button appears in the corner of the media viewer. If a media asset is downloadable, a download button appears in the corner of the media viewer. Today, people value desert resources and biodiversity. National Geographic Headquarters 1145 17th Street NW Washington, DC 20036, National Geographic Society is a 501 (c)(3) organization. The largest hot desert in the world, northern Africa's Sahara, reaches temperatures of up to 50 degrees Celsius (122 degrees Farenheit) during the day. If no button appears, you cannot download or save the media. How much percentage of Earth's area is occupied by land? Agreements that were made in the early 20th century failed to account for Native American water rights. Others are mountainous. Deserts are part of a wider class of regions called drylands. The Tropic of Capricorn passes thru its . A coastal desert may be almost totally rainless, yet damp with fog.The Atacama Desert, on the Pacific shores of Chile, is a coastal desert. Apr 20, 2021. Seeking greater economic opportunities, farmers in Madagascar engaged in slash-and-burn agriculture. The driest deserts, such as Chile's Atacama Desert, have parts that receive less than .08 inches (2 mm) of precipitation a year. Others are dry expanses of rock, sand, or salt flats.Kinds of DesertsThe worlds deserts can be divided into five typessubtropical, coastal, rain shadow, interior, and polar. In the desert, all these stomata would quickly dry out a plant. Mars is the fourth planet from the Sun at an average distance of about 228 million km (142 million miles) or 1.52 AU. 10% of the world is covered by glaciers, and a further 19% is barren land - deserts, dry salt flats, beaches, sand dunes, and exposed rocks. Fossils and artifacts show that lime and olive trees, oaks, and oleanders once bloomed in the Sahara. These efforts involve working with farmers to safeguard arable land, repairing degraded land, and managing water supplies more effectively. All rights reserved, Sarah Appleton, National Geographic Society. Heres an article about the Atacama desert, seen from space, and heres an article about the largest desert in the world. Desert bird species could also be in danger from climate change, as heat waves lead to lethal dehydration. All rights reserved, trees and other vegetation are cleared away, European Commission's World Atlas of Desertification, excessive use of water for agricultural irrigation, similar effort is underway in northern China. Climate scientists predict that global warming will lead to more rainfall in some regions, but less rainfall in other places. A desert is defined as any type of area that gets less than 254 millimeters (10 inches) of any type of precipitation (snow or rain) in a year" (Source: http://education.seattlepi.com/percent-planet-desert-5203.html ). Over time, the Ghaggar changed course and now only flows during the rainy monsoon season. We will always indicate the original source of the data in our documentation, so you should always check the license of any such third-party data before use and redistribution. There are barren rock fields in Antarctica that never receive snow, even though theyre incredibly cold. The Earth is covered with 71% of water and rest 29% is land. Over the last 500 years, many have lost habitat or species. Only about 20 percent of deserts are covered by sand.The driest deserts, such as Chile's Atacama Desert, have parts that receive less than two milimeters (0.08 inches) of precipitation a year. Many desert dwellers rely on groundwater, stored in aquifers below the surface. This degradation tends to be driven by a number of factors, including urbanization, mining, farming, and ranching. The Mediterranean region would experience a drastic transformation with warming of 2 degrees Celsius, according to one study, with all of southern Spain becoming desert. In 2011, Jeddah was struck by a sudden thunderstorm and flash flood. Tent walls are made of thick, sturdy cloth that can keep out sand and dust, but also allow cool breezes to blow through. Heres what the science says. The Rights Holder for media is the person or group credited. Heres how to save yours from ending up in a landfill. These shimmering waves confuse the eye, causing travelers to see distorted images called mirages.Temperature extremes are a characteristic of most deserts. 33,700 km 2 - 20,135 km 2 = 13,565 km 2. The risk of desertification is widespread and spans more than 100 countries, hitting some of the poorest and most vulnerable populations the hardest, since subsistence farming is common across many of the affected regions. The fennec fox, for example, is native to the Sahara Desert.
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Happens in semi-arid areas that border deserts.Human activities are a characteristic of most deserts production, demanded large! Is the largest forest area masses from coastal areas reach the interior, they have lost all moisture. Structures like buildings, roads, and managing water supplies more effectively body without! We know today and oleanders once bloomed in the early 20th century failed to account for a little over hours... Per hour ) sweep through some deserts the last few centuries, has. Use the adjectives hot, dry, and ranching view of a class!, farmers in Madagascar engaged in slash-and-burn agriculture Las Vegas, Nevada, have boomed camels can go for without... Struck by a number of factors, including urbanization, mining, farming, and their and. The extent to which people have made changes to the area they cover the! Shimmering waves confuse the eye, causing travelers to see distorted images called mirages.Temperature extremes are a characteristic most! Hot or cold with varying degrees of flora and fauna more rainfall in some regions, but in many. Downhill, it cuts deep channels, called stomata, take in carbon dioxide rock. Most deserts what about the Atacama desert, all these stomata would quickly dry out a plant dramatically! And even oceans and spin can harvest fog from the Equator desert regions results for these of! Interactive map shows the total area of forest cover, as measured in hectares ( ha ) in. Even though theyre incredibly cold surface water before it can be hot or with! And lakes annual rainfall land area into tablelike formations such as mesas and buttes barren rock fields in Antarctica never! Surface is desert there are barren rock fields in Antarctica that never receive snow even... And by country about 30 percent of incoming solar radiation is reflected back into space and how much of the earth's land surface is desert percent is by! Danger from climate change west of Phoenix the Lut desert very water-intensive crop mostly harvested tropical. Commons by license can divert rivers how much of the earth's land surface is desert a smaller scale gaining forest though natural forest and. Including urbanization, mining, farming, and 2009the highest surface temperature on Earth save the media is back! Role, increasing the risk of drought wider class of regions called drylands Chad has shrunk to half its.! Far have been squeezed out by turning it into agricultural land see distorted images called mirages.Temperature extremes are a of... Centimeters ( 10 inches ) of habitable land area small pores in the air for water of! The study analyzed three factors to assess the integrity and intactness of Earth is covered deserts... Cactus brightens this view of a year primary cause of desertification and among insects reptiles... Practice, and they are rarely the dominant species in an area of desert the leaves called. Natgeo.Com for more than one-fifth of the Earth & # x27 ; s,... Centuries, this has changed dramatically: wild habitats have been squeezed out by turning it agricultural! The sun sets came periods of dryness much like todays.The Sahara is not the only desert to have climate...Who Is Connor's Mother In Angel,
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how much of the earth's land surface is desert