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← GeographyWhich outcome occurs when increased bioturbation affects floodplain soil?
A)Enhanced soil horizon development
B)Reduced soil aggregate stability✓
C)Decreased organic matter decomposition
D)Diminished nutrient availability overall
💡 Explanation
Bioturbation disrupts soil structure via physical mixing. This mechanism causes decreased aggregate stability because burrowing organisms decrease soil cohesion by disrupting particle arrangements; therefore, the soil is more prone to erosion rather than horizon development under optimal conditions.
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