Social Studies

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17 January, 05:42

In the Pacific Northwest of the United States, there is a long chain of volcanoes. Why did they form?

A. The Pacific plate is being subducted under the North American plate.

B. The North American plate is being subducted under the Pacific plate. C. The Pacific plate and North American plate are moving away from each other. D. The Pacific plate and North American plate are moving sideways past each other.