Across
- 2. Energy from tides
- 4. Does NOT replenish naturally
- 6. Replenishes naturally
- 7. Resources that do NOT replenish Naturally
- 9. Colorless and Odorless
- 11. To use more than once
- 12. Energy from the sun
- 13. Known as petroleum
- 15. The act of trying to use less
- 17. To replace or make like new
- 18. Energy from the splitting of atoms
- 19. Resources that replenish naturally
Down
- 1. Energy from moving water
- 3. Gases that trap heat in the atmosphere
- 5. Energy from recently living plants/microorganisms
- 8. Energy from heating of the Earth
- 10. Nonrenewable sources of energy that form within the Earth over millions of Years
- 11. To convert into a useable material
- 14. Fossilized plants
- 16. Energy from uneven heating