問題詳情
7. Natural selection is based on all of the following except
(A) genetic variation exists within populations.
(B) the best-adapted individuals tend to leave the most offspring.
(C) populations tend to produce more individuals than the environment can support.
(D) individuals adapt to their environments and, thereby, evolve
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增