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OT: Egyptians and Art: Does the Dark Brown only occur in the Armana
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[QUOTE]Originally posted by 9th Element: [QB] [QUOTE]Originally posted by Skeptic: [qb] [/qb][/QUOTE]As I enclose! The Sahara Desert covers over 3.5 million square miles and has only 2.5 million inhabitants - roughly 1 person per square mile (0.4 sq km)- which is one of the lowest population densities on earth. Wherever abundant food and water sources occur, one will find relatively large masses of people and wildlife. On the whole, the Sahara is one of the harshest environments known to man. Many researchers have gone into the Sahara looking for clues as to how long ago humans began inhabiting the desert. According to archeologists, the Sahara was much more densely populated thousands of years ago when the desert's climate was not as harsh as it is today. Fossils, rock art, stone artifacts, bone harpoons, shells and many other items have been found in areas which today are considered too hot and dry to inhabit. This suggests that these areas were quite habitable thousands of years ago, but that the climate of the Sahara has since changed drastically. The artifacts found were located near remains of giraffe, elephant, buffalo, antelopes, rhinoceros, and warthog, as well as the remains of fish, crocodiles, hippopotamuses and other aquatic animals which suggests that thousands of years ago water was quite abundant in the Sahara. Physical Features The Sahara's topographical features include shallow basins, large oasis depressions, serirs or regs (gravel-covered plains), plateaus, mountains, sand sheets, dunes and sand seas (ergs). The highest part of the desert is at the summit of Mount Koussi, which is 11,204 feet (3,415 m) high. However, the lowest point of the Sahara is 436 feet (133 m) below sea level: in the Qattera Depression in Egypt. Over 25 percent of the Sahara's surface is covered by sand sheets and dunes. The most common types of dunes include tied dunes, blowout dunes, barchan and transverse dunes, longitudinal seirfs, and complex sand seas. Within the Sahara are several pyramidal dunes that reach over 500 feet in height while the draa, a mountainous sand ridge, reaches over 1,000 feet. Researchers have for many years tried to figure out how these dunes were formed, but the case remains unsolved. The Sahara itself is at least as large as the whole of Europe, if not much bigger. And the sub Sahara itself has a lot more variation in the landscape, be it flora and or fauna! Causing more variation within the phenotype of these inhabitance! :D [/QB][/QUOTE]
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