Across
- 2. Inundated, totally submerged in water
- 5. A natural resource or source of energy that does not run out such as wind, or solar power.
- 7. A species that no longer exists
- 11. A long dry period without rain
- 12. To make a strong public expression of disagreement
- 14. Not able to be maintained at the current rate or level
- 15. A group of animals or plants that share the same characteristics which can interbreed
Down
- 1. Animals, birds, and plants living in their natural habitat
- 3. A liquid derived from petroleum for use as a fuel
- 4. Gases such as C02 that warm up the atmosphere
- 6. Gases released into the atmosphere
- 8. Large rotating structures that convert movement into energy
- 9. Free from artificial chemicals and pesticides
- 10. A combustible black rock used as fuel.
- 13. Something that can be used more than once