plain - large area of flat land, Mountain - tall area made of rocks with steep sides, Valley - low areas of land between hills, landforms - there are many kinds of these on Earth, hills - mounts with a rounded top, deserts - area of dry place with little or no rain, oceans - large body of salty water, rivers - stream of water that flows into a larger body of water, lakes - smaller body of water with land around it,

Landforms 

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埋め込み

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