Air Pollution

Name: ______________________   Date: ____________

Use the clues to fill in the crossword.

Across

  1. 4. A black colloidal substance consisting wholly or principally of amorphous carbon and used to make (4)
  2. 6. Moved or conveyed by or through air (8)
  3. 8. Any sensation or change in bodily function that is experienced by a patient and is associated (plural) (8)
  4. 12. Gas in the air that we need to breathe (6)
  5. 14. An odorless very poisonous gas that is a product of incomplete combustion of ___ (14)
  6. 16. Substance used in or made by chemistry (plural) (9)

Down

  1. 1. A heavy odorless colorless gas formed during respiration and by the decomposition of organic (13)
  2. 2. The fine spores that contain male gametes and that are borne by an anther in a flowering plant (6)
  3. 3. Gases ejected from an engine as waste products (7)
  4. 5. A mixture of gases required for breathing (3)
  5. 7. Undesirable state of the natural environment being contaminated with harmful substances as (9)
  6. 9. Either of two saclike respiratory organs in the chest of vertebrates (plural) (5)
  7. 10. A colorless gas soluble in alkalis and cold water (5)
  8. 11. Layer of air around the Earth (10)
  9. 13. How well your body and mind are doing (6)
  10. 15. Air pollution by a mixture of smoke and fog (4)