Geography, asked by bp975743, 11 months ago

what are the causes of volcanic activity

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Answered by Anonymous

3

Answer:

When a part of the earth's upper mantle or lower crust melts, magma forms.Although there are several factors triggering a volcanic eruption, three predominate: the buoyancy of the magma, the pressure from the exsolved gases in the magma and the injection of a new batch of magma into an already filled magma chamber.

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