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A river or stream flowing into a bigger river or lake.

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A isolated hill with a flat top and steep sides. Narrower than a mesa.

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A mesa is an isolated hill with a flat top.

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A flood plain is an area adjacent to the river.

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A glacier is a large chuck of ice in the ocean.

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A desert is a place with little or no rain. They are normally very hot and humid.

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A river delta is a sediment carried by the river.

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A basin is an area drained by a river.

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A plateau is a level of high land.

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A straight is a river between two pieces of land.

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A waterfall is is a place that water flows over the edge of land.

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A hill is a raised part of land, but not as high as a mountain.

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A harbor is a calm body of water that large boats go in for shelter from storms.

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A sand bar is an island of sand in the river or ocean.

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A peninsula is a piece of land surrounded by water. An example of a peninsula is Florida.

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A plain is a large piece of flat land. Some plains occur in valleys, lowlands, and at high elevations.

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A valley is an area between two large hills. Some valleys have rivers going through them.

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A rivers start at the highest point in an area and flow downstream. Rivers can gain water from rain and melted snow.

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A Mountain is like a large hill that most of the time will form a point at the top. A mountain is a lot steeper than a hill.

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A volcano is a hole in the Earth that lava escapes from. The lava comes from deep down in the Earth.