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← GeographyWhich feedback cycle stabilises loess deposition against early erosion?
A)Bio-crust enhancing soil stability✓
B)Thermal expansion reducing fracturing
C)Capillary action impeding sediment transport
D)Clay mineralisation preventing deflation
💡 Explanation
Bio-crust formation reinforces loess structure, because the biological activity binds particles together, increasing resistance to wind erosion via soil stabilisation; therefore bio-crust stabilises loess, rather than purely physical stabilisers being the cause under moderate disturbances.
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