green house gassez effect

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Across
  1. 1. Man's best friend
  2. 4. Has a trunk
  3. 6. sourrounds the earth
  4. 9. what is causing global warming
  5. 10. Likes to chase mice
  6. 11. what will happen in the year 3000
  7. 13. cars use this
Down
  1. 2. what we breath in
  2. 3. most vechiles produce
  3. 5. Flying mammal
  4. 7. Large marsupial
  5. 8. what we breath out
  6. 12. assult rifle