74. "Primary" succession is succession that
(A) involves establishment of primary producers.
(B) leads to establishment of a climax community dominated by primary producers.
(C) occurs on newly exposed geologic substrates, not organic soil.
(D) occurs where organic soils have been exposed but not destroyed by disturbance.
(E) occurs after fire or agricultural abandonment.
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統計: A(5), B(3), C(29), D(4), E(4) #1126341
統計: A(5), B(3), C(29), D(4), E(4) #1126341