True, without climate changes, human couldn't move to the virgin lands



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送交者: Latino2 于 2005-5-12, 13:39:19:

回答: it is also possible that climate change and human expansion occured concurrently 由 xj 于 2005-5-12, 12:57:39:

in the first place.

The significance of this interaction is that it forced the occurance of animal domestication, which then made the protein supply sustainable.



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