問題詳情

46.The author mentions all of the following as examples of the effect of humans oil the world's ecosystems EXCEPT
(A) destruction of the tropical rain forests
(B) habitat destruction in wetlands
(C)damage to marine ecosystems
(D)the introduction of new varieties of plant species

參考答案

答案:D
難度:非常簡單1
統計:A(0),B(0),C(0),D(6),E(0)

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