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← GeographyWhich outcome increases proportionally with substantial bioturbation in temperate grasslands?
A)Enhanced nutrient-mineral profile stratification
B)Accelerated organic matter decomposition✓
C)Increased clay particle accumulation below
D)Decreased soil macroporosity and aeration
💡 Explanation
Accelerated organic matter decomposition occurs because bioturbation by earthworms and other organisms increases soil aeration and mixing via pedogenesis; therefore, microbial activity increases, rather than distinct horizon separation because the organic material is turned over.
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