Official 21 Lec 3
Question 3 of 6
According to the professor, what is a major weakness of the classification system that is based on animals’ physical characteristics?

A.

It can show the relationships only among a small number of animal species.

B.

It requires technology that is not widely available.

C.

It cannot account for characteristics that first appeared in the recent geologic past.

D.

It cannot determine whether similar characteristics developed in similar ways.

正确答案:D

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