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7 June, 22:26

Which of the following resulted from a genetic variation that was favored by natural selection?

A. cancer in a lab rat

B. the long neck of a giraffe

C. the small size of a Chihuahua

D. smoothness of a river rock

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Answers (1)
  1. 8 June, 00:18
    0
    i think that it's B)
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