B2 2020 Jurney

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Across
  1. 1. Flammable Gas
  2. 3. Third most abundant Gas
  3. 5. Most abundant gas in the atmosphere
  4. 6. Above the stratosphere
  5. 9. Earth heating itself up
  6. 11. Hottest layer of the atmosphere
  7. 12. Produced during photosynthesis
  8. 13. Trash scattered around the environment
  9. 14. When regions weather changes
  10. 16. Keeps our planet the perfect temperature
  11. 17. The outermost region of the atmosphere
  12. 18. Second major layer
Down
  1. 2. High concentration of atoms
  2. 4. People use as fuel
  3. 7. Produced during burning of fossil fuels
  4. 8. Process of Carbon naturally interchanging
  5. 10. Most dense layer in the atmosphere
  6. 15. The process of removing trees