Science crossword

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Across
  1. 4. the process where old material is turned into something new
  2. 6. fishing for food faster than fish can reproduce
  3. 8. substances released into the atmosphere
  4. 9. cities designed to have the environment in mind
  5. 13. able to be recycled
  6. 14. humans demand on nature
  7. 15. turning old things into something better
  8. 17. product not used anymore, usually damaged
  9. 20. using less energy to produce the same product
Down
  1. 1. material that degrades in nature
  2. 2. vehicles that are powered by electricity
  3. 3. in limited supply, will run out
  4. 5. made by humans, without machines
  5. 7. in the beyond time
  6. 10. what supplies the world with food and fabrics
  7. 11. total emissions from an individual
  8. 12. the natural movement of the air
  9. 16. the expansion and growth of a community
  10. 18. does minimal damage to the environment
  11. 19. companies disguising policies as good for the environment