Natural selection and survival of the fittest(物竞天择,适者保存)是“物竞天择,适者保存”:)~物竞天择是:Natural selection. 适者保存是:survival of the fittest.hehe:)没那么复杂的^ ^
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Natural selection and survival of the fittest
Thing border it selecting Survival of the fittestis it perfect?
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