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← GeographyWhich risk increases when a lava dome's vent geometry constricts?
A)Increased explosive potential✓
B)Decreased sulfurous outgassing
C)Elevated radiative heat transfer
D)Reduced convection cell formation
💡 Explanation
An explosive eruption is more prone because constricted volcanic vents invoke pressure build-up—a Volatile Accumulation mechanism. Therefore, explosive potential increases, rather than sulfur decreases, due to vent size.
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