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Which statement describes natural selection? It is the primary mechanism for evolution. It must act on structural traits. It acts to cause overpopulation. It causes learned skills to become heritable traits.

User Jay Supeda
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it is the primary mechanism for evolution

User Darren Ruane
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The correct answer is this one: " It is the primary mechanism for evolution." Natural selection is described as the primary mechanism for evolution. It is a bit tricky though because the choice "it acts to cause overpopulation" might also be applicable.
User Andy Lindeman
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