| A | B |
| glacier | A huge, slow-moving mass of ice. |
| quarry | A large open pit cut into the ground to mine stone. |
| tradition | A way or an idea that has been handed down from the past. |
| produce | Fresh fruits and vegetables. |
| truck farm | A farm that grows produce and is located close to the city so that the produce can be taken quickly by trucks to nearby markets. |
| agricultural economy | An economy in which people meet most of their needs by farming. |
| industrial economy | An economy in which factories and machines manufacture most goods. |
| finished product | A manufactured good made from raw materials. |
| waterway | A body of water that boats can use. |
| competition | The contest among companies to sell the most products. |
| navigable river | A river that is deep and wide enough for ships to use. |
| rapid | A rocky place in a river where a sudden drop in elevation causes fast-moving, dangerous water. |
| canal | A waterway dug across land. |
| lock | A part of a canal in which the water level can be raised or lowered. |