g55

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Across
  1. 2. Polluted air haze
  2. 3. Polluted precipitation
  3. 7. Air-powered energy
  4. 8. Atomic energy source
  5. 10. Alcohol fuel
  6. 12. Organic energy source
  7. 14. Energy emission
  8. 15. Organic waste reuse
  9. 16. Poisonous substance
  10. 18. Crude oil
  11. 20. Unwanted material
  12. 22. Gaseous fossil fuel
  13. 23. Sun-based energy
Down
  1. 1. Coal oil gas
  2. 4. Waste burning
  3. 5. Wastewater
  4. 6. Polluted surface flow
  5. 9. Reprocessing waste
  6. 11. Water-powered energy
  7. 12. Plant-based diesel
  8. 13. Earth heat energy
  9. 16. Ocean motion energy
  10. 17. Dangerous waste
  11. 19. Waste disposal site
  12. 21. Carbon-based fuel