33. What are the most abundant animals found in the pelagic zone?
(A)echinoderms
(B)cnidarians
(C)zooplankton
(D)dinoflagellates
(E)marine mammals
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統計: A(4), B(3), C(16), D(3), E(8) #3149493
統計: A(4), B(3), C(16), D(3), E(8) #3149493