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) 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.
Correct Answer:

Verified
Correct Answer:
Verified
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