The amount of water in the stream and the gradient.
However if you had two streams both with the same amount of water in them but with one stream flowing down a steeper slope (gradient) than the other, then the steep one has more ability to erode.
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Streams constantly erode sediments. Anytime the water is moving, sediments are being eroded
headward erosion
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They erode the landscaping around them.
Streams can't erode their channels endlessly. there is a lower limit to how deep can a stream erode. Base level is the lowest point to which a stream can erode its channels.
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The major factor should be its speed. The higher its speed, the more force the stream will hit the bank and bed, making the land erode more easily.
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Streams constantly erode sediments. Anytime the water is moving, sediments are being eroded
Stream erode their channels by abrasion, grinding, and by dissolving soluble material.
They erode sediments when it snakes back and forth across their valley. xxxJoanna
Streams can't erode their channels endlessly. there is a lower limit to how deep can a stream erode. Base level is the lowest point to which a stream can erode its channels.