atmosphere A-B4 2020 Su

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Across
  1. 2. thin layer that absorbs most of the UV rays
  2. 3. when solar radiation is trapped by the
  3. 6. emits the most amount of greenhouse gases by burning fossil fuels
  4. 9. largest amount atmospheric gas
  5. 11. largest amount of greenhouse gases
  6. 12. top layer of atmosphere
  7. 13. manufacturing many products
  8. 15. bottom layer of atmosphere
  9. 16. the adding of poisonous or unwanted air or gases to the atmosphere
  10. 17. when there are too many people
  11. 18. third largest amount of atmospheric gas
  12. 19. second largest amount of atmospheric gas
  13. 21. the gases that surround a planet
  14. 22. third layer of atmosphere
  15. 24. the extreme warming of the earth
  16. 25. the removal of trees
Down
  1. 1. water after it has been evaporated
  2. 4. natural fuels formed from remains of living organisms
  3. 5. gases that help absorb infrared radiation
  4. 7. second layer of atmosphere
  5. 8. second largest amount of greenhouse gases
  6. 10. waves absorbed by the ozone layer
  7. 14. animals raised by humans that emit a lot of methane
  8. 20. third largest amount of greenhouse gases
  9. 23. heats the earth