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Geography

Which process limits the lifespan of oxbow lakes formed by meandering rivers in floodplains?

A)Eutrophication from agricultural runoff
B)Thermal stratification during summer months
C)Sedimentation gradually filling waterbody
D)Volcanic eruption transforming caldera

💡 Explanation

When a river meander is cut off, forming an oxbow lake, sedimentation occurs because fluvial sediments are deposited, reducing its depth over time. Therefore sedimentation is the limiting factor, rather than eutrophication, thermal stratification or volcanic activity which require different conditions.

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