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Which outcome occurs when intense tropical weathering increases soil acidity?

A)Cation exchange capacity declines sharply
B)Nitrogen fixation increases dramatically
C)Clay mineral formation accelerates rapidly
D)Organic matter decomposition decelerates rapidly

💡 Explanation

Increased acidity from weathering causes greater leaching of base cations (Ca, Mg, K), leading to a decrease in cation exchange capacity because these ions are displaced from soil colloids. Therefore, CEC declines, rather than alternatives which need less acidic and base-rich soil environments.

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