Help
End Section Review
End Exam
Answer Edit Confirmation
课程
活动
资料
反馈
题目内容
Among wide-ranging animal species, populations at the edge of the species' range are frequently exposed to less(i) and more variable conditions than those in other parts on the range.As a result, the animal's abundance is often (ii) .
学员15cmln
学员12vzgp
学员14mcyu
学员14czvx