Official 53 Lec 3
答题结果:0/6
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Question 3 of 6
According to the professor, why has it been difficult for fish and many other organisms to live in the Chesapeake Bay?

A.

Toxic chemicals in the water have poisoned many of them.

B.

Runoff from farmland has made the water very muddy.

C.

Water flow from streams has been unreliable.

D.

Oxygen levels in the water have been reduced.

我的答案:

正确答案:D

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