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Geography

Which hazard increases as magma cools inside volcanic domes?

A)Increased risk of explosive eruption
B)Decrease in overall vent viscosity
C)Reduction in thermal expansion stress
D)Accelerated rate of surface weathering

💡 Explanation

Explosive eruption risk increases due to increased volatile concentration as magma cools driving crystallization affecting volatile solubility; driving pressure, because cooling enriches the remaining liquid in volatiles, therefore leading to higher overpressure and explosive potential, rather than a decrease in viscosity.

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