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| Question | Answer |
|---|---|
| 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 animal and plant remains |
| Rocky Mountains | the major mountain range in western North America |
| Glacier | a huge slow-moving mass of ice or snow |
| 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 for more than half the year |
| permafrost | a permanently frozen layer of ground below the top layer of soil |
| prairie | a region of flat or rolling land covered with grasses |
| province | a political division of land in Canada |