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← GeographyWhich impact occurs to soil composition when prolonged, intense rainfall leads to substantial downward water movement?
A)Nutrient depletion in upper soil✓
B)Increased organic matter decomposition
C)Elevated pH levels lower horizons
D)Reduced weathering of parent material
💡 Explanation
Nutrient depletion occurs because rainwater carries soluble minerals via leaching as it percolates downward, therefore topsoil loses fertility; rather than the other options, impacting pH or weathering indirectly or negligibly compared to nutrient loss.
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