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← GeographyWhich outcome occurs when seasonally thawed active layer over permafrost experiences saturation on a moderate slope?
A)Accelerated solifluction lobe formation✓
B)Increased loess deposition rates
C)Formation of esker drainage systems
D)Reduced soil carbon sequestration
💡 Explanation
When the active layer saturates on a slope, solifluction occurs because the saturated soil loses its shear strength and flows downslope under gravity, forming visible lobes. Therefore, solifluction lobe formation accelerates, rather than loess deposition, esker creation, or carbon sequestration changes, which require different geomorphic processes.
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