Erosion has been a common cause of soil deterioration
around the world since the beginning of time. It caused the
downfall of many ancient Middle Eastern and European
civilizations and continues to plague the "new" lands of
Australia and the Americas both physically and
economically. In the extreme climates of Africa,
overgrazing has been the result of an encroaching desert
Asia''s catastrophic soil erosion has been the effects of hilly
terrain, over population, and land expansion.
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