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← GeographyWhich consequence results when reduced infiltration during pedogenesis weakens soil structure?
A)Accelerated surface runoff and erosion✓
B)Increased biotic activity throughout layer
C)Enhanced gas exchange within horizon
D)Greater buffering of precipitation acidity
💡 Explanation
Increased surface runoff and erosion occur because reduced infiltration from compaction inhibits pedogenesis, decreasing aggregate stability in the topsoil horizon via weakened bioturbation; therefore, surface cohesion weakens, rather than biological activity increasing, under drier conditions.
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