Solution - The dissolving of some rocks, Attrition - The collision of rocks with other rocks which removes sharp edges, Corrasion - The wearing away of the bed and banks by rocks and particles that the river is carrying, Hydraulic action - The sheer force of river water removing material from the bed and banks, Bank - The side of the river channel, Traction - Rolling of stones along the bed of the river, Saltation - Particles bouncing along the bed of the river, Suspension - The transport of particles within the flow of the water,

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