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← GeographyWhich outcome occurs in a karst cave system when precipitation decreases and evapotranspiration increases?
A)Speleothem growth rates slow down✓
B)Increased dissolution of carbonate bedrock
C)Expansion of the saturated zone
D)Decreased carbon dioxide concentration in cave
💡 Explanation
Speleothem growth slows because decreased water availability limits calcium carbonate deposition; therefore, the growth rate slows, rather than promoting dissolution. The driving mechanism is reduced waterflow, not increased acidity or saturation.
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