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← GeographyWhich risk increases when thermal erosion degrades permafrost?
A)Methane release from clathrate destabilization✓
B)Increased albedo from exposed bedrock
C)Halting of mineral weathering reactions
D)Decreased sediment flux to deltas
💡 Explanation
Methane release increases because thermal erosion causes permafrost thaw, leading to clathrate destabilization which contains significant methane reserves. Therefore methane is emitted, rather than bedrock increase albedo which would imply different surface changes.
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