| A | B |
|---|
| Natural Resources | Earth's useful materials |
| Solar Energy | Energy from the sun. |
| Conservation | Wise use of such things as oil, air, trees, and water |
| Soil | Loose material that covers much of Earth's Surface |
| Gullies | Miniature Water valleys |
| minerals | These make rocks valuable |
| Ore | A rock that is mined for the minerals it contains |
| Nonrenewable | A resource that cannot be replaced. |
| Fossil Fuels | Made of once living plants and animals |
| Renewable | A resource that can be replaced. |
