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← GeographyWhich process increases hazard area from pyroclastic flows?
A)Density currents exceeding topographic barriers✓
B)Rapid cooling causing flow solidification
C)Crystallization inhibiting granular transport
D)Viscosity reducing particle dispersal velocity
💡 Explanation
Pyroclastic density currents spread extensively where exceeding barriers, due to flow bulking and gravity spreading promoting volume increase. Reduced barriers increase exposure because a greater area is inundated, rather than only solidifying or crystallizing.
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