阿摩線上測驗
19. Keystone predators can maintain species diversity in a community if they _____.
(A) competitively exclude other predators
(B) prey on the community's dominant species
(C)allow immigration of other predators
(D) prey only on the least abundant species in the community
答案：登入後查看
統計： A(0), B(2), C(1), D(0), E(0) #3426528
統計： A(0), B(2), C(1), D(0), E(0) #3426528
