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← GeographyWhich mechanism causes increased sinkhole formation where karst aquifers lie beneath farmland?
A)Agricultural nutrient runoff leaching✓
B)Increased evapotranspiration
C)Compacted topsoil impedes drainage
D)Weathering increases infiltration rates
💡 Explanation
Agricultural runoff introduces acidic substances promoting dissolution of carbonate rocks during karstification; nutrient runoff leaching increases because water percolates through the soil removing minerals, therefore sinkholes become more prone in these areas because subsurface rock dissolves, rather than other options.
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