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The top documents tagged [desertification sahara]
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desertification sahara
Human Elective V.Redmond 2011. Overpopulation Overpopulation occurs when there are more people living in an area than there are resources to support.
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Africa! Let’s take a break from Europe. Warm up What do you know about Africa? Which is bigger, the US or Africa? What kind of environment do you think.
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Africa!
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