Can anyone plzz answer this question for me: Explain why a river changes through its three courses.
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The long profile is a graph of a river that marks the change in altitude from the upper course to its lower course. All along its course, the river uses energy to carry out erosion, transport and deposition of sediment. This energy is produced when water flows down a slope.
Anonymous:
Did you just taken this from Google???
we have studied this before
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