Official 48 Lec 2
Question 2 of 6
According to the professor, why was the hot spot theory originally proposed?

A.

To explain prolonged volcanic activity far from plate boundaries

B.

To explain why volcanoes form both on land and in the ocean

C.

To explain variations in the amounts of magma produced by volcanoes

D.

To explain why volcanoes may become inactive after millions of years

正确答案:A

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