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Which risk increases when buildings are constructed on discontinuous permafrost regions?

A)Methane release from thawing hydrates
B)Accelerated weathering due to ice formation
C)Localized subsidence due to thermokarst
D)Increased albedo amplifying solar radiation

💡 Explanation

When ground thaws beneath structures in a discontinuous permafrost area, thermokarst develops because thawing reduces soil strength & volume, leading to uneven settling. Therefore localized subsidence risks increase, rather than methane release, acceleratred weathering, or increased albedo, each requiring other distinct environmental drivers.

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