HUMAN IMPACTS ON THE ENVIRONMENT

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Across
  1. 1. What type of plastic breaks down more easily?
  2. 4. What is the complete disappearance of a species?
  3. 7. What is a location set aside to protect wildlife called?
  4. 8. What type of waste can be turned into compost?
  5. 10. What process turns saltwater into drinkable water?
  6. 11. What do conservation biologists aim to protect?
  7. 14. What resource is becoming scarce in many U.S. states?
  8. 15. What do we call a resource that can replenish naturally?
  9. 16. What is the term for illegal hunting?
  10. 17. What is the term for materials that do not break down naturally?
  11. 18. What is a group of similar organisms called?
  12. 19. What act helps protect endangered species in the U.S.?
Down
  1. 2. What percentage of plastic ends up in landfills or the environment?
  2. 3. What event triggered major human population growth?
  3. 5. What happens to plastic over time instead of disappearing?
  4. 6. What government agency sets water conservation rules in the U.S.?
  5. 9. What is the opposite of a renewable resource?
  6. 12. What method of desalination uses heat?
  7. 13. What everyday item can be recycled into clothing?