Our Changing World

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Across
  1. 6. the action of chopping down trees
  2. 8. the thing we live on
  3. 9. the opposite of cold
  4. 10. its on top of the world
  5. 13. the colour of nature
  6. 14. where lots of wildlife grows
  7. 15. opposite of east
Down
  1. 1. smoke in the air
  2. 2. frozen water
  3. 3. the average weather
  4. 4. a man-made flying object
  5. 5. the things you throw away
  6. 7. where penguins live
  7. 11. a thick black liquid
  8. 12. there is lots of water in it