問題詳情
【題組】3. According to paragraph 2, which of the following principles of ecosystems can be learned by studying a pond?
(A) Ecosystem properties change more slowly than individuals in the system.
(B) The stability of an ecosystem tends to change as individuals are replaced.
(C) Individual organisms are stable from one year to the next.
(D) A change in the members of an organism does not affect an ecosystem's properties
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