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23 October, 02:42

Which is a requirement for natural selection to occur?

A. heritable variations for some traits

B. the ability of an organism to improve a trait during its lifetime

C. equal probability of survival for all offspring

D. fewer offspring than the environment can support

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  1. 23 October, 03:05
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    A. heritable variations for some traits.

    I'm not quite positively sure about this answer because I haven't read this since biology two years ago, but the other answers don't make sense.
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