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← GeographyWhich outcome rapidly increases when fractured cave limestone collapses?
A)Aquifer contamination via conduit flow✓
B)Reduced surface stream meandering length
C)Increased rate of speleothem formation
D)Enhanced evaporite deposition in vadose zone
💡 Explanation
Karst aquifers become more vulnerable as fracture density increases in overlying collapsed material, which facilitates rapid, direct hydrological connections. Because this occurs via increased conduit flow, contaminants bypass natural filtration; therefore, water contamination increases rather than better water quality.
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