B3 2020 Garceau

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Across
  1. 3. colorless gas
  2. 6. what rays does the greenhouse effect use
  3. 8. burning of fossil fuels
  4. 11. coldest layer/meteorites burn up here
  5. 13. 3 main gasses make up this
  6. 14. can happen more frequently if sea water rises
  7. 15. most abundant gas in the atmosphere
  8. 16. how high the sea is from a certain point
  9. 18. what heats up the troposphere
  10. 20. weather occurs here
  11. 22. blocks out ultraviolet rays
  12. 23. what heats up the thermosphere
  13. 24. comes out of our cars when we burn fuel
  14. 25. can be on fire whether natural or man made
Down
  1. 1. what actually heats up the Earth's atmosphere due to the greenhouse effect
  2. 2. between the troposphere and the stratosphere
  3. 4. freshwater's main storage
  4. 5. the animal that produces the most methane
  5. 7. the cause of the Earth heating up
  6. 9. temperature increases as altitude increases
  7. 10. 78% nitrogen, 28% oxygen, 1% other (what are these percentages)
  8. 12. produces because of photosynthesis
  9. 17. vapour that is in a gas state
  10. 19. ozone layer
  11. 21. cause of the ice caps melting