Chapter 14

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Across
  1. 2. gas made up of oxygen above earths atmosphere
  2. 5. chemicals that kill weeds,bugs,rodents
  3. 10. materials not able to be treated or recycled
  4. 11. used materials turned into new products
  5. 13. naturally occurs in rocks,soil,water,and air
  6. 14. contaminate environment
  7. 15. government agency that sets rules and regulations
Down
  1. 1. maintain natural resources in environment
  2. 3. found in fish
  3. 4. process of gathering food scraps and waste
  4. 6. fog mixed with smoke and chemical fumes
  5. 7. able to break down without harm thrown away
  6. 8. substances that have specific characteristics
  7. 9. level of pollutants in the air
  8. 12. use in household products before 1978