| A | B |
|---|
| glacier | a large mass of ice that moves slowly over the land, formed over a long period of time from snow |
| tributary | a river or stream that flows into a larger river |
| Continental Divide | the boundary that separates rivers flowing toward opposite sides of a continent; in North America, in the Rocky Mountains |
| rain shadow | an area on the side of a mountain away from the wind that receives little rainfall |
| tropics | the area on the Earth between the 23 1/2N and 23 1/2S lines of latitude, where the climate is almost always hot |
| tundra | a cold, dry region covered with snow for more than half the year; a vast, treeless plain where the subsoil is frozen even in summer |
| permafrost | permanently frozen layer of ground below the top layer of soil |
| prairie | a region of flat or rolling land covered with tall grasses |
| province | a political division of land in Canada, similar to a state in teh United States |
| alluvial | deposited by water; relating to the fertile topsoil left by rivers after a flood |
| agribusiness | a large company that runs huge farms to produce, process, and distribute agricultural products |
| hydroelectricity | electric power produced by moving water; usually generated by releasing water from a dam across a river |
