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Biology 19 Online
OpenStudy (anonymous):

What is essential for natural selection to occur? a. variation between members of a species b. a large population size c. a high mortality rate d. environmental change I chose A, I could be wrong I'm not sure

OpenStudy (anonymous):

I would also choose A. A large number if variations in a species is necessary according to Darwin.

OpenStudy (anonymous):

thanks !

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