which is not one of darwin's four main ideas of natural selection?
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A : evolution always improves organisms.
B : There is differential reproduction among better-adpated organisms.
C : individuals in a population vary in many traits.
D : Organisms produce more offspring than can survive
B : There is differential reproduction among better-adpated organisms.
C : individuals in a population vary in many traits.
D : Organisms produce more offspring than can survive