UNIT 4: GREEN ISSUES

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Across
  1. 3. The Earth getting hotter because of pollution
  2. 6. A light material used for bottles and bags
  3. 8. A big building where people make things
  4. 11. Things we throw away; trash
  5. 12. Dirty air in a city made of smoke and fog
  6. 13. A strong material used to make cars and cans
  7. 14. Something used before by another person
  8. 15. A large area full of many trees
  9. 20. To make something dirty or unsafe
  10. 22. Big changes in weather patterns over time
  11. 23. Dirty air, water, or land that hurts nature
  12. 24. When the ground shakes suddenly
Down
  1. 1. To chop or remove trees (two words in meaning)
  2. 2. To keep something safe from harm
  3. 4. Outside, not inside a building
  4. 5. Things from nature people use (water, trees, oil)
  5. 7. A body of fresh water surrounded by land
  6. 9. The world around us: air, water, plants, and animals
  7. 10. A hard, clear material used for windows and bottles
  8. 16. How hot or cold something is
  9. 17. A large, fast fire in nature that burns trees
  10. 18. Land with farms, fields, and few houses
  11. 19. To make air, water, or land dirty
  12. 21. To break or ruin completely