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unit 2 Geography
| Term | Definition |
|---|---|
| Rocky Mountains. | the major mountain range in western North America . |
| glacier. | a huge, slow-moving mass of snow and ice. |
| Great Lakes. | the world's largest group of freshwater lakes. |
| tributary. | a river or stream that flows into a larger river. |
| Tundra. | a cold, dry region covered with snow more than half. the year |
| Permafrost. | a permanently frozen layer of ground below the top of soil. |
| Prairie. | a region of flat or rolling land covered with grass. |
| Province. | a political division of land in Canada. |
| Alluvial soil | fertile topsoil left by a river, especially after a flood. |
| Agribusiness | a large company that runs huge farms. |
| Hydroelectricity | electric power produced by moving water. |
| Fossil fuel | a fuel formed over millions of years from animals and plant remains. |