What is especially worrying about Pfiesteria blooms? A. Conditions are becoming increasingly favourable for their spread B. They are fatal to humans who come in contact with them C.

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What is especially worrying about Pfiesteria blooms?

Conditions are becoming increasingly favourable for their spread

They are fatal to humans who come in contact with them

They have devastated the fishing industry in U.S coastal waters

Researchers have no idea as to exactly what causes them

Giải thích

Lời giải:

6. Thông tin: Lately, however, blooms – or huge, dense populations – of Pfiesteria are appearing in coastal waters, and in such large concentrations the dinoflagellates become ruthless killers… More and more, conditions along the east coast seem to be favorable for Pfiesteria.

Đáp án: A