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← GeographyWhich feedback effect accelerates soil horizon mixing during intensive bioturbation?
A)Increased soil aggregate structural stability
B)Enhanced decomposition exposing buried minerals✓
C)Reduced water infiltration, decreasing porosity
D)Decreased soil organism burrowing activity
💡 Explanation
Enhanced decomposition exposes buried minerals to weathering, thereby accelerating bioturbation because increased nutrient availability stimulates increased burrowing, which further mixes soil. Therefore, decomposition enhances the process, rather than slowing down biotic activity, as occurs with reduced burrowing.
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