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It's a long deep valley. It's got high sides made of rock.
It's an area of low land between mountains and hills.
It's a big area of water with land around it
A big area of land where the weather is always dry and it is made of sand or rocks.
An area of land surrounded by water.
It's a place where water goes over the rocks. It falls from a higher place to a lower place
It's a long line of rock or coral under the sea.
It's a kind of mountain. Lava can come out and it can be dangerous.
The part of the land that is next to the sea.
It's a very big sea. The three biggest are the Pacific,the Atlantic and the Indian.
There are a lot of trees and it usually rains here.
Big and flat area of land.