Multiple Choice
How are volcanic conduits formed?
A) by erosion from hot gases that carry hard abrasive rocks and ash upwards
B) by superheated gases melting a pipe through the older rocks of the volcano
C) by injecting molten magma up through the volcano to clear a path
D) The vent is kept clear by continuous eruption and the walls are formed by deposits.
Correct Answer:

Verified
Correct Answer:
Verified
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