阿摩線上測驗
50. The feeding relationships among the species in a community determine the community's__________.
(A)secondary succession
(B) ecological niche
(C)species richness
(D) trophic structure
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統計： A(0), B(0), C(0), D(2), E(0) #3162522
統計： A(0), B(0), C(0), D(2), E(0) #3162522
