Across
- 4. raw materials
- 7. natural environment
- 9. ecological products
- 11. recycle
- 12. energy
- 14. efficiency
- 15. renewable
- 16. toilet
Down
- 1. sustainability
- 2. consumption
- 3. location
- 5. to reduce
- 6. to save
- 8. to reuse
- 10. heating
- 12. isolation
- 13. the green zone/area