Answer
Natural levees form along the banks of a river due to the repeated flooding of the river. When the river overflows its banks during floods, it deposits sediment on the adjacent floodplain. Over time, these repeated flood events result in the accumulation of sediment, creating natural embankments or levees along the river's edges. Back swamps and yazoo tributaries are related to natural levees because they are features that form within the floodplain.
Back swamps are low-lying areas behind natural levees that often become flooded during high water events, while yazoo tributaries are smaller streams that flow parallel to the main river and are confined by natural levees. These features are a result of the complex interactions between the river, its sediment load, and the topography of the floodplain.
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