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← GeographyWhich consequence results when intense rainfall erodes topsoil?
A)Reduced nutrient availability in lower horizons✓
B)Increased aggregate stability from clay reduction
C)Decreased aluminum concentration within solution
D)Enhanced cation exchange within all horizons
💡 Explanation
Reduced nutrient happens because intense leaching removes humic substances and minerals from upper soil horizons via eluviation. Therefore, nutrient availability is low at depth, rather than enrichment, given that leaching removes these supplies downward during heavy rainfall.
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