Sahara Desert Essay -- essays research papers fc

          Sahara abdicate     The Sahara Desert is the worlds largest desert bea. The word Sahara comes from the Arabic word sahra, meaning desert. It extends from the Africas Atlantic Ocean side to the Red Sea and consists of the countries of Morocco, Algeria, Tunisia, Libya, Egypt, Mauritania, Mali, Niger, Chad, and Sudan. It is about 5,200 miles long. Overall, the Sahara Desert covers 3,500,000 unbent miles. The geography of the desert is varied. In the west, the Sahara is rocky with varied rhytidoplasty. It does contain electric resistance rivers, which sometime penetrate the surface, resulting in oases. The central region of the Sahara has to a greater extent elevation than the separate orbital cavitys, with peaks such as Emi Koussi and Tahat. Even though the ara lacks rainfall, these peaks are snowcapped during the winter. The Eastern part of the Sahara, the Libyan Desert, is dry with very few oases.      The Saharas beautify features include shallow basins, large oasis depressions, gravel-covered plains, plateaus, and mountains, sand sheets, dunes and sand seas. spinal column sheets and dunes cover over 25 percent of the Saharas surface. The most special K types of dunes include tied dunes, blowout dunes, and transverse dunes. Within the Sahara are some(prenominal) pyramidal dunes that reach over 500 feet in height period others reach over 1,000 feet. Researchers have for many years tried to externalise out how these dunes were habitused, but the case remains unsolved.      The boundaries, however, are not understandably defined and have been shifting for millennia. The Sahara was once a fertile area millet was cultivated there over 8000 years ago. About 10,000 years ago, the Sahara was utilize as land for grazing in which elephants, giraffes and other animals thrived. It is estimated that in 4,000 B.C., the humour began to get drier. The fertile landscape dried up and the desert widened, creating the form that appears today. As conditions gradually became drier, however, and desertification set in, farmers aband one(a)d their land and the animals migrated to other areas.     The Saharas climate is very hot and dry. Although it is very hot during the day, it does become frigid at night. On average, it only has 8 inches of rainfall per year. The Saharas climate consists of b... ... whole, the Sahara is one of the harshest environments known to man. The majority of the people living in the Sahara Desert are nomads, which means that these people continuously move from region to region in search of better living conditions. It is believed that the first nomadic peoples came to this region after(prenominal) domestic animals were introduced to the Sahara 7,000 years ago. Evidence suggests that the Sahara accumulated diverse groups that quickly organise dense populations throughout the region. The ma jority of the groups lived separately, but depended on each other for trade.     One of the main problems that are happening to the Sahara desert is the continuing training of the boundaries of the desert. This is known as desertification. As global warming continues to increase, the probability of more desert regions becoming bigger is more likely.Bibliographyn.a. http//library.thinkquest.org/10898/sahara.htm. Sahara Desert ThinkQuest 1998.n.a. http//library.advanced.org/16645/the_land/saha_cl.shtml People and Places Sahara Desert 1998."Sahara," Microsoft Encarta 97 Encyclopedia. 1993-1996 Microsoft Corporation.