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← GeographyWhich outcome from pyroclastic density flows increases erosion rate?
A)Vegetation removal exposing loose sediment✓
B)Gully formation within compacted ash
C)Lahar generation from glacial melting
D)Chemical weathering from acidic gases
💡 Explanation
Vegetation loss increases erosion because flow-induced deforestation removes root systems that stabilize soil, which leads to greater surface runoff. Therefore, removal causes increased erosion, rather than concentrated flow in gullies or melting glaciers.
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