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18 Cards in this Set
- Front
- Back
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marsh
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low, wet land where cattails, tall grasses, and other similar plants grow
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fall line
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a place where a reiver drops from higher to lower land
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waterpower
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energy produced by rushing water
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pioneer
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a person who first settles in a new place
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pass
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an opening between high mountains
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line graph
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a graph that uses a line to show changes over time
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reservoir
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a lake formed by the water held back by a dam and used to store water
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hydroelectric power
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electric made by water power
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reclaim
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to return something, such as land, to its natural condition
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hub
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city where trains or planes stop on there way to other places
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occupation
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the work that a person does for a living
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high-tech
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having to do with inventing, building, or using computers and other kinds of electric equipment
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wildlife refuge
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an area of land set aside to protect animals and other living things
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habitat
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a region where a plant or animal naturally grows or lives
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endangered
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being threatened with extinction
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extinct
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no longer in existence, which is what happens to a living thing when all of its kind have died out
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reef
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a ridge of rocks, sand, or coral near the surface of the sea
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coral
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a stony material formed in tropical waters by the skeletons of tiny sea animals
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