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Geography

Which pattern commonly results where loess deposits overlie karst topography?

A)Increased surface subsidence incidents
B)Accelerated surface weathering rates
C)Decreased regional seismic activity
D)Reduced groundwater recharge rates

💡 Explanation

When loess sits atop karst, infiltrating water dissolves the underlying limestone, causing subsurface cavities because this chemical weathering weakens overall structure. Therefore, increased *compaction* becomes more likely, rather than increased weathering elsewhere.

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