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Is an opening in the earth’s crust through which lava, volcanic ash, and gases escape.
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Any area of land smaller than a continent and entirely surrounded by water. They may be classified as either continental or oceanic.
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Is a narrow, deep valley cut by a river through rock. They may be thousands of feet deep. Smaller valleys of similar appearance are called gorges.
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Is a landform that rises prominently above its surroundings, generally exhibiting steep slopes, a relatively confined summit area, and considerable local relief.
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Is a natural stream of water that flows from its source until its mouth, where it flows into another lake or the sea.
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Is a thick tropical forest. Is full of life: birds, insects, reptiles, monkeys, and often gorillas and other animals. They're dangerous places.
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Is a extremely dry area of land with sparse vegetation. This enviroments are so dry that they support only extremely sparse vegetation
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