What is the solution?

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What is attrition?

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What is abrasion?

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What is hydraulic action?

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Identify the four processes of erosion that occur within a river.

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What is lateral erosion?

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What is vertical erosion?

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Why do discharge and velocity increase downstream?

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In the middle course of the river valley floor becomes wider why is this?

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Why does the river channel become wider and deeper with distance downstream?

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