cataract
Rapids
Waterfalls or river rapids
A lock is the mechanism for raising and lowering ships in a river that has rapids or waterfalls. Locks are used to make navigation an easier task.
CAtaract
A mechanism for raising or lowering ships in a river that has rapids or waterfalls is called dam and lock system. It is a special kind of dam system.
The Niger River does not have any waterfalls. The most notable things on the river are some bars, rapids, swampy areas and a dam (in Nigeria) which is used for hydroelectricity.
A mature river is on a shallower slope and it doesn't have rapids or waterfalls.(Waterfalls: steep fall of water, as of a stream, from a height.Rapids: part of a river where the current is swift.)
three features of a youg river are rapids waterfalls and steep turns
A mature river is on a shallower slope and it doesn't have rapids or waterfalls.(Waterfalls: steep fall of water, as of a stream, from a height.Rapids: part of a river where the current is swift.)
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when the river water suddenly falls from sufficient height it is said to have formed a waterfall .
False