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← GeographyWhich outcome occurs when thermokarst thaw lakes expand?
A)Accelerated coastal erosion and methane release✓
B)Reduced albedo lowers Arctic temperatures
C)Enhanced carbon sequestration in bog soils
D)Increased amphibian biodiversity across wetlands
💡 Explanation
Coastal erosion and methane release accelerate because thermokarst expansion activates positive feedback; the Abedo Effect melts the permafrost, the Methane gas escapes, therefore answer A, rather than carbon sequestration due to decomposition of organics in permafrost.
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