What is true of Pfiesteria A. It seems to flourish in the presence of certain pollutants

What is the main function of the toxins emitted by the dinoflagellates?

A. They are quick-acting poisons that kill fish within minutes. 

B. They weaken the fish just long enough for the tiny creatures to attack 

C. They damage the nervous system of potential predators. 

D. They cause fish to develop wounds on which creatures feed.

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Chọn B

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