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Changes in water or sediment supply, change in slope, or changes to base level elevation can begin or end the life of a river.
<h3>What is a River?</h3>
This refers to a water body that is naturally occurring and flows into a larger water body such as a sea.
Hence, we can see that due to the composition of a river, we can see that if there are either sudden or gradual changes to either the water, or sediment supply, change in slope, or changes to base level elevation this can mark the end of the life of the river.
Read more about rivers here:
brainly.com/question/72485
Rock art? It's probably not the best answer, but apart from tools and weapons, it was the only thing I could think of.
Answer:
In the upper reaches (also known as the source) the gradient is at its steepest because of vertical erosion. This changes further downstream as lateral erosion (side to side) from the river and deposition start to replace vertical erosion as the dominant process. Finally, the river really flattens out as it approaches the mouth as deposition become dominant.
America is very beautiful.