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Aping the Stone Age
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Chimpanzees in Tai National Park in Ivory Coast use stones for cracking nuts, and older chimps pass these skills on. Studies of the way modern chimps use tools may provide clues for piecing together aspects of human prehistory. Credit: Clive Bromhall/OSF/Animals Animals


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  • its nice to study the chimps behavior,thry r really intellegent animal.
    aisha jamil aisha jamil
    Nov. 11, 2009 at 1:15pm
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