Official 47 Lec 2
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Question 5 of 6
According to the professor, why do some biologists doubt that magnetite helps birds navigate?

A.

It is magnetic properties are quite weak

B.

It is found in young birds that cannot fly yet

C.

It is not found in all albatross species

D.

It is found in birds that do not migrate

我的答案:

正确答案:D

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