Across
- 3. susteinability
- 5. to reduce
- 9. to save
- 10. heating system
- 12. use soap to scrub
- 15. toilet
- 16. to use again in a different way
- 17. streets, vehicle pathways
- 19. natural surrounding
- 20. to use, consume
Down
- 1. efficiency
- 2. isolation
- 4. waste products
- 6. to recycle
- 7. person walking in the street
- 8. natural resources
- 11. to reduce
- 13. green zone
- 14. natural unprocessed products
- 18. renewable
- 19. energetic