For natural selection to occur, there must be competition for resources, competition for survival, or 15) different reproductive success. Why is this so? A) Without competition, there is no pressure to mutate. B) The struggle of competition makes individuals stronger. C) Natural selection acts on the different abilities of individuals to survive and pass on their genes to the next generation. D) Populations evolve to preserve the species and don't change unless they must. Then explain why the answer is correct and why the others one are inccorect.

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Pre-Darwinian Concepts