Kate's Pollution Crossword

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Across
  1. 4. the process by witch water on earth?
  2. 7. rubbish that is not in it's place
  3. 10. the thing that is all around us
  4. 11. place we things live
  5. 13. to cut a long straight line into or though
  6. 14. something that pollute
  7. 15. a chemical that kills insects
  8. 17. a chemical that kills unwanted plants
Down
  1. 1. to annoy something
  2. 2. helps grow plants
  3. 3. something that can bought or sold
  4. 5. having to do with the sea
  5. 6. dirty water that smells
  6. 8. a waste substance that makes air unhealthy
  7. 9. a tiny specimen
  8. 12. water and waste material that is carriad away in sewers
  9. 16. a solid or liquid base