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Why do natural levees form along river banks?

Answer and explanation

Correct answer: Because coarse particles settle quickly near the banks during floods

The correct answer is B. When floodwater spills over a river bank, its depth and velocity decrease suddenly. The heaviest and coarsest sand and silt particles therefore lose transport capacity first and settle close to the channel. Repeated floods build slightly raised embankments called natural levees. Fine material is carried farther onto the floodplain, so general river-bed uplift, wind, and glacier blockage do not explain levee formation.

Related tags

Natural LeveeFlood DepositionRiver BanksReconciling Cash Book And Passbook DifferencesBank Reconciliation StatementAccountancyClass 11 Mcq

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