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| The North American Plain stretches from the Mississippi River to the Rocky Mountains. |
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| is a plain or a hilly region within the temperature zone that is covered by grasses. |
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| Prairie's extreme weather |
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| Because prairies are in the interior of the continent, they experience extreme changes in weather. Winters are cold with wind swept snow and summers are hot with drought. |
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| dry plants that break off from the roots and roll across the plains. |
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| are ground squirrels similar to gophers. They live by the millions in underground towns that stretch across the plains. |
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| another name for buffalo. |
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| the heavily forested hills rich in lead, coal, iron and marble. |
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| Famous for Mount Rushmore. Indians called them Black Hills because of their dark appearance when seen from a distance. |
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| A region which the Indians called Mako Sica, meaning "bad lands". |
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| in northeast Minnesota and contains rich deposits of iron ore. The name of this range is an Ojibwa word meaning "giant". |
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| chief tributary of the Mississippi, is the second longest river in North America. |
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| the world's largest gulf. |
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| an important Atlantic current. |
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