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← GeographyWhich outcome occurs when excessive irrigation impacts caves?
A)Accelerated dissolution of soluble bedrock✓
B)Increased pressure within confined aquifers
C)Reduced groundwater infiltration rates
D)Decreased surface soil erosion rates
💡 Explanation
Irrigation increases freshwater flow through unsaturated karst, triggering bedrock weathering because carbonic acid concentration increases via solution weathering. Therefore, caves dissolve faster, modifying landscapes, rather than reducing runoff, which would happen with different conditions.
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