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  • 19-04-2018
  • Geography
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how do rivers erode their channels

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Аноним Аноним
  • 19-04-2018
The four main forms of river erosion. Hydraulic action - the force of the river against the banks can cause air to be trapped in cracks and crevices. The pressure of the action  weakens the banks and gradually wears it away.
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