Across
- 3. A product designed to decompose.
- 7. The act of protecting trees or animals.
- 9. Food that is grown naturally.
- 12. A source of energy from underground.
- 13. A formal expression for farming
- 14. The relationship between all living things.
- 17. When the last of an animal dies.
Down
- 1. Chemicals released into the atmosphere.
- 2. Climate change.
- 4. Animals few in number.
- 5. The gradual wearing away of the earth.
- 6. The protected area of forest around a city
- 8. Scientific changes to animals.
- 10. Illegal hunting.
- 11. A person who desires to protect the environment.
- 15. Keeping animals in a cage or enclosure.
- 16. To use something again.