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← Earth & Natural SystemsWhich outcome occurs when clay minerals in soil experience high concentrations of hydrogen ions?
A)Increased aggregation of soil particles
B)Enhanced water retention capacity
C)Accelerated mineral nutrient uptake
D)Reduced cation exchange capacity (CEC)✓
💡 Explanation
The cation exchange capacity decreases because the hydrogen ions displace other cations, such as calcium and potassium, from the exchange sites on clay minerals. Therefore, the soil's ability to retain essential nutrients is diminished, rather than being enhanced as in other conditions.
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