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boundary |
The border of a country
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continent |
Very large land area with oceans on many sides
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country |
A land region under the control of one government
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equator |
The imaginary horizontal line around the center of the earth; 0 degrees latitude
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geography |
The study of land, water, plants, animals, and people of a place
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headwaters |
The starting place of a river
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latitude |
The distance north or south of the equator
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longitude |
The distance east or west of the prime meridian
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prime meridian |
The imaginary vertical line throught the center of the earth; 0 degrees longitude
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tributary |
A small river that flows into a larger river or body of water
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