Thread: Why have Only Humans.....
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Old 09-18-2007, 09:56 PM
Max Raker Max Raker is offline
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Join Date: Apr 2005
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Default Re: Why have Only Humans.....
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Opposable thumbs = able to use tools.

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We've all heard this, but is their any real evidence that it is true? Specifically that opposable thumbs were crucial to our develepoment.
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