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← GeographyWhich topographic outcome occurs when increased surface soil moisture triggers solifluction?
A)Formation of lobate debris sheets✓
B)Development of esker ridge systems
C)Increased dissolution causing karst topography
D)Deposition forming alluvial fan deposits
💡 Explanation
Lobate debris sheets form because increased moisture decreases soil shear strength, which increases the rate of solifluction, leading to downslope movement, therefore soil accumulates into lobe-shaped formations, rather than deposition by fluvial systems forming alluvial fans.
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