Across
- 3. rotting food scraps in soil
- 5. converting waste into reusable material
- 7. introduction of harmful substances into the environment
- 9. 10 years
- 10. a sudden violent shaking of the ground
- 11. respectful of the environment
Down
- 1. a synthetic material made from polymers
- 2. a person concerned about protecting the environment
- 4. unwanted or unusable material, substances or by-products
- 6. the state or process of disappearing/vanishing
- 8. the weather of a place over a long time