Which statement about the May, 1980, eruption of Mount St. Helens is FALSE?
A) The most powerful explosive event was preceded by a massive landslide.
B) During the eruptive period, the mountain peak was substantially built up by new lava flows and pyroclastic debris.
C) Mudflows accompanied the major eruptive events.
D) Plumes of ash rose high into the atmosphere during the major eruptive events.
Correct Answer:
Verified
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A)an explosive
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