| A | B |
| Irrigation | The use of canals,ditches, or pipes to move water to dry area |
| Drainage Basin | the land drained by a river system |
| Environment | The surroundings in which people, plants, and animals live |
| Tributary | A stream or river that flows into a larger stream or river |
| Natural Resources | Something found in nature that people can use |
| Region | An area in which many features are similar |
| Coastal Plain | Flat low land along the Atlantic Ocean |
| Modify | to change or alter |
| Arid | Hot and dry |
| Erosion | The gradual wearing away of of the Earth's surface |
| Climate | Weather over and extended period |
| Relative Location | The positon of one place compared to another |
| Longitude | Lines on a map or globe that run north and south |
| latitude | Lines on a map or globe that run east and west |
| Inlet | Any area of water extendting into the land from a larger body of water |
| Millennium | Period of 1,000 years |
| Century | Period of 100 years |
| Decade | Period of 10 years |
| What relationship between Earth and Sun causes the seasons? | The change in Earth's tilt toward the sun |
| Why is the climater warmer near the equator? | The sun shines more directly on the Earth at the equator. |