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← GeographyWhich factor drives oxbow lake formation disproportionately during glacial retreats?
A)Increased sediment load fluctuations✓
B)Reduced channel sinuosity control
C)Enhanced evapotranspiration effects
D)Decreased floodplain vegetation buffering
💡 Explanation
Increased meltwater discharge elevates sediment transport via **aggradation,** because higher load encourages extensive channel migration. Therefore, oxbow lakes form faster due to cutoff meanders that are sediment filled, rather than steady flows contributing to stable, long term changes.
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