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← GeographyIncreased weathering rates occur in karst caves when?
A)Water's CO2 concentration increases✓
B)Vegetation density around caves decreases
C)Cave rock strength increases locally
D)Air pressure within the cave rises
💡 Explanation
Increased water CO2 concentration increases carbonic acid formation; this drives cave dissolution via dissolution weathering because the greater the chemical reaction, the more rock is dissolved. Therefore, more CO2 increases weathering, rather than diminished vegetation, higher rock strength, or increased air pressure.
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