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← GeographyWhich outcome results as hydraulic conductivity decreases throughout pedogenesis?
A)Enhanced surface runoff and soil erosion✓
B)Increased silicate mineral weathering.
C)Accelerated formation of iron-rich nodules
D)Greater CO2 absorption by the soil
💡 Explanation
Decreased hydraulic conductivity limits water infiltration, causing increased saturation and runoff; overland flow enhances erosion because Hortonian overland flow exceeds the soil's infiltration capacity, therefore, more surface erosion occurs, rather than increased weathering or CO2 absorption which requires water infiltration.
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