問題詳情

42. ________species are those that, despite low biomass, exert strong effects on community structure.
(A) Keystone
(B) Cornerstone
(C) Dominant
(D) Prominent
(E) Foundational

參考答案

答案:A
難度:適中0.5625
統計:A(9),B(2),C(2),D(1),E(0)

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