Across
- 7. Something that can be maintained without harming the environment.
- 9. The effect caused by gases trapping heat in the atmosphere.
- 11. A gas layer that protects Earth from UV radiation.
- 12. The process of converting waste into reusable material.
- 13. Animals living in nature without human control.
- 15. Power derived from physical or chemical resources.
Down
- 1. The protection of natural resources.
- 2. The natural home of an animal or plant.
- 3. The removal of trees from a forested area.
- 4. Unwanted or unusable materials.
- 5. A type of energy that can be replaced naturally.
- 6. The long‑term weather patterns of a region.
- 8. The variety of life in a particular habitat or ecosystem.
- 10. The contamination of air, water or soil.
- 14. A community of living organisms interacting with their environment
