AB3 2020 Li

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Across
  1. 4. Light that can cause cancer and eye damage
  2. 6. Absorbs almost all of the sun's UV rays
  3. 13. These get burned and produce more CO2
  4. 15. Star at the center of the solar system
  5. 16. The envelope of gases surrounding the earth
  6. 17. Warmest layer in the atmosphere
  7. 20. Layer with most weather
  8. 21. Second-most abundant gas in the atmosphere
  9. 22. The clearing of trees
  10. 23. Emits from natural gas and livestock
  11. 24. manufacturing activity
  12. 25. Average long-term changes in weather
Down
  1. 1. Water in a gaseous state
  2. 2. Third most abundant gas in the atmosphere
  3. 3. Gas that absorbs and emits radiant energy
  4. 5. Layer in which planes like to fly
  5. 7. Most abundant gas in the atmosphere
  6. 8. Farm animals regarded as an asset
  7. 9. When there are too many people in an area
  8. 10. Layer in which meteors burn up
  9. 11. The gradual heating of the Earth's surface
  10. 12. Gases absorb sun's energy, warming the planet
  11. 14. Emits from agricultural soil management
  12. 18. Most human greenhouse gas emissions
  13. 19. Outermost layer of the atmosphere