Across
- 2. to use what you know to tell why things happen
- 4. when we use something again
- 5. the moving of rocks, soil, or sand on the earth's surface
- 9. to find the size, number, or amount of something
- 10. anything in nature that God made for people to use
- 11. moving air
- 13. to not waste; to use something wisely
- 14. to break up the soil
Down
- 1. a scientist who studies the ocean
- 3. when we use less of something
- 6. natural resources formed from the remains of plants and animals that were buried quickly
- 7. anything that makes the air, water, or land dirty
- 8. something made by people, machines, or a natural process
- 12. to make something new out of an object