Air Pollutants

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Across
  1. 1. Bad-smelling gases from cars or factories.
  2. 4. A harmful metal that can pollute the air and cause health problems.
  3. 7. What comes out of a fire or a chimney.
  4. 9. A place that makes things and gives off smoke.
  5. 11. Gases from cars and factories that cause smog.
Down
  1. 2. Dirty air that comes from the back of cars.
  2. 3. Tiny particles that float in the air and settle on things.
  3. 5. A harmful gas that cars make; it has no color or smell.
  4. 6. A gas from landfills and cows that traps heat in the atmosphere.
  5. 8. Part of carbon dioxide that makes the air warmer.
  6. 10. A gas that helps protect us from the sun but can be harmful near the ground.
  7. 12. A mix of smoke and fog that makes the air dirty.