Entire area drained by a river and its tributaries

a high-lying area separating two or more drainage basins

The origin of a river

A branch of the main river

the lowest level to which a river can erode

section of a river from the source to the mouth

section of the river from one bank to another

Which one is an input into a drainage basin

Which ones are flows within a drainage basin

Which one is not a characteristic of the upper course of the river?

Which landform does not form in the upper course of the river?

Rock particles knock and bump against each other and they get smoother and rounder

Large boulders are rolled on the river bed

finer particles float on the surface of the river

Meanders are created when the river enters a gentle gradient and the river starts to swing from a pool to a riffle

One of the dangers of living on a floodplain is flooding

Which one is not a hard engineering method that is used to prevent flooding

Channel straightening is a soft engineering method that is used to prevent flooding

An oxbow lake is formed when the loop of a meander is cut off during a flood