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← GeographyWhich outcome occurs when burrowing earthworms enhance soil?
A)Increased aggregate stability✓
B)Elevated soil bulk density
C)Diminished primary productivity
D)Reduced gas exchange rates
💡 Explanation
Enhanced soil structure follows bioturbation because earthworm activity mixes organic matter and minerals via **pedogenesis**, therefore increasing aggregate stability, rather than leading to compaction or reduced productivity generally arising from nutrient leaching.
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