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← GeographyWhich habitat alteration occurs when earthworm introduction causes changed soil structure?
A)Decreased soil aeration and compaction
B)Increased erosion through sediment destabilization
C)Nutrient stratification and plant-community exclusion✓
D)Enhanced decomposition without structure changes
💡 Explanation
Reduced complexity of nutrients is a consequence of bioturbation because homogenisation occurs due mixing by the earthworms, therefore stratification decreases, impeding niche differentiation, creating exclusion zones near non-adapted species, rather than aeration effects.
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