阿摩線上測驗
33. What is it called when plants begin colonizing barren land and form a community?
(A) Primary succession
(B) Secondary succession
(C) Tertiary community
(D) Climax community
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統計： A(1), B(0), C(0), D(0), E(0) #3507003
統計： A(1), B(0), C(0), D(0), E(0) #3507003
