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← GeographyWhich consequence results when pyroclastic surge mobilizes tephra downstream?
A)Accelerated glacial ice ablation occurs✓
B)Increased regional albedo is observed
C)Enhanced surface evapotranspiration develops
D)Decreased regional adiabatic cooling happens
💡 Explanation
Glacial ice incorporates dark tephra during flash floods; albedo decreases because of increased surface area. This enhances insolation absorption by reduced albedo (positive feedback), therefore accelerated ablation occurs, rather than cooling or limiting evapotranspiration.
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