Human is a kind of animal on the very top of the food chain.



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送交者: Latino2 于 2005-5-12, 13:24:14:

回答: 那么动物之间的相互捕食会不会造成物种的灭绝? 由 boxer 于 2005-5-12, 12:52:09:

It's not easy to break the balance if human were not involved.



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