Pollution Unit Review

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Across
  1. 6. large scale cutting of trees
  2. 8. pollution over a widespread area
  3. 10. an example of something that is part of the hydrosphere
  4. 11. all the ground, rocks, and minerals of Earth (nonliving things)
  5. 13. the layer of gases that surround Earth
  6. 16. Energy sources that are replaced faster than they are used
  7. 17. chemical, biological, and physical status of water
Down
  1. 1. temperatures on Earth have been increasing steadily over the past 100 years
  2. 2. pollution from 1 source (traced back to one place)
  3. 3. an example of a renewable energy source
  4. 4. one of the main gases polluting the atmosphere
  5. 5. all the living things on Earth
  6. 7. contamination of the ari by harmful substances
  7. 9. energy sources that are used faster than they can be replaced
  8. 12. all the water on and in Earth and in the atmosphere
  9. 14. an example of a living thing that is part of the biosphere
  10. 15. an example of a nonrenewable energy source