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1
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The deposits of a river onto its banks
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3
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The area of high ground which separates two drainage basins
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5
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The force of moving water
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6
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A horseshoe-shaped lake
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7
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A feature of the middle stage
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8
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The route a river takes
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10
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The erosion of the back face of a waterfall
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11
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The place where a river begins
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2
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A feature of the youthful stage
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4
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The contents of the river
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9
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Another word for the middle stage
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