Increased flood risk results when groundwater's solvent exceeds a limestone aquifer's saturation primarily because of which mechanism?

A)Carbonic acid positive feedback✓

B)Hydraulic head pressure accumulation

C)Sediment deposition overestimation

D)Evapotranspiration rate divergence

💡 Explanation

Increased solvent availability boosts weathering, enabling positive feedback in carbonic acid production, therefore accelerating the dissolution process, rather than pressure accumulation or evapotranspiration because of increased exposed area and dissolution.

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Increased flood risk results when groundwater's solvent exceeds a limestone aquifer's saturation primarily because of which mechanism?

💡 Explanation

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