The eruption that occurred on Mount St. Helens was triggered by a

A) huge landslide caused a lateral blast that knocked down trees and buildings.
B) fast-moving viscous lava flow flowed through the middle of Portland.
C) volcano that was so heavy that it caused part of the island to collapse.
D) cinder cone that sent up a large column of pyroclastic material.
E) None of these are correct.


A) huge landslide caused a lateral blast that knocked down trees and buildings.

Environmental & Atmospheric Sciences

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A) lack of foreign aid B) money sent from overseas relatives C) low import dependence D) all of the above E) none of the above

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