Multiple Choice
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) A fast-moving viscous lava flow flowed through the middle of Portland.
C) A volcano that was so heavy that it caused part of the island to collapse.
D) A scoria cone that sent up a large column of pyroclastic material.
E) None of these.
Correct Answer:
Verified
Correct Answer:
Verified
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