| A | B |
|---|
| Free Enterprise | Capitalism |
| Crop Rotation | Growing different crops in succession |
| NAFTA | free trade zone in North America |
| FCC | agency that licenses radio stations |
| countour plowing | plowing along the natural curves of the land |
| Canada's most important waterway | St. Lawrence Seaway |
| largest export of the US | agricultural products |
| Percentage of crops American farmers export | about one half |
| bycatch | unwanted marine life and birds caught in nets |
| smog | a haze caused by sun's interaction with exhaust gases |
| overfishing | a process in which a body of water becomes rich in dissolved nutrients |
| acid rain | precipitation that carries high amounts of acidic material |
| eutrophication | has damaged fishing industry |
