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a) Creation of differed tributaries and confluences.
Differed tributary: Tributary blocked from joining the main river by levees.
Differed confluence: New point where the differed tributary joins the main river downstream.
b) Destructive flooding.
o Due to the river bursting its banks during the flood season due to the bed being raised above the general level of the flood plain.
o Due to differed tributaries flowing into the flood plains.
o Because the river channel has become narrower and shallower due to deposited alluvium.
Kavungya answered the question on May 4, 2019 at 08:34
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