Air Pollution

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Across
  1. 3. Precipitation with low pH levels
  2. 6. Smog formed by sunlight acting on pollutants
  3. 10. Poisonous gas from incomplete combustion
  4. 12. Major greenhouse gas
  5. 14. Ground-level pollutant harmful to respiratory health
  6. 15. Potent greenhouse gases
  7. 16. Gas from burning fossil fuels
  8. 19. Device reducing vehicle emissions
  9. 20. Carcinogenic compound found in emissions
Down
  1. 1. Gases trapping heat in the atmosphere
  2. 2. Pollutant from vehicle emissions
  3. 4. Tiny solid or liquid particles in the air
  4. 5. Hazardous material used in insulation
  5. 7. Pollutant from agriculture and waste
  6. 8. Toxic metal from old paint and gasoline
  7. 9. Radioactive gas from natural sources
  8. 11. Highly toxic pollutants from waste burning
  9. 13. Mixture of smoke and fog
  10. 17. Emission from building materials and furniture
  11. 18. Vapor from coal burning and industrial processes