Official 54 Lec 1
Question 1 of 6
What does the professor mainly discuss?

A.

The importance of zooplankton in the marine food chain

B.

The interdependence of two types of tiny marine organisms

C.

A physical feature of zooplankton that makes them well adapted for swimming

D.

A phenomenon observed in some species of zooplankton

正确答案:D

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