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← GeographyWhich consequence most directly results when construction disrupts permafrost's active layer?
A)Accelerated thermokarst landscape formation✓
B)Increased coastal erosion by waves
C)Reduced river discharge seasonality
D)Elevation in local atmospheric pressure
💡 Explanation
Disrupting the active layer triggers thermokarst because disturbing the insulating surface layer leads to increased ground temperatures, therefore accelerating thaw subsidence rather than altering wave action which is independent, river discharge changes or atmospheric pressure.
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