問題詳情

33. The chain lengths in food webs are limited by
(A) the amount of energy such as sunlight available in an ecosystem.
(B) the efficiency of energy transfers that occur between trophic levels.
(C) catastrophes.
(D) all of the above.
(E) A and B only.

參考答案

答案:D
難度:困難0.304348
統計:A(0),B(2),C(1),D(7),E(9)

內容推薦

內容推薦