ASD 1 and 3

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