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Which 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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