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← GeographyWhich risk abruptly escalates when water seeps into degassing cracks of a lava dome?
A)Increased pyroclastic flow potential✓
B)Magma chamber pressure reduction
C)Crater lake formation rates increase
D)Vent location directional instability
💡 Explanation
Introduction of water can flash to steam, increasing pressure inside the dome. This is the **phreatomagmatic explosion** mechanism releasing pyroclastic flows because rapid heat transfer occurs, therefore the risk of flows increases, rather than other gradual processes such as lake level.
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