B3 2020 Kidane

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Across
  1. 2. a gas that contains 78% of our atmosphere
  2. 5. an instrument used to measure wind speed
  3. 6. is able to modulate the production of methane and tropospheric ozone
  4. 9. a layer that contains ozone layer
  5. 10. a layer of gas of Earth
  6. 11. chemicals that are destroying the ozone
  7. 13. an instrument used to measure air pressure
  8. 15. it has been supplemented by ozone created by human process
  9. 17. it is emitted during agricultural and industrial activities
  10. 18. a gas that contain 21% of our atmosphere
  11. 19. is found beyond the atmosphere
  12. 22. it goes far out which is unlimited
  13. 24. it warms the Earth's surface
  14. 25. in this layer aurora borealis form
Down
  1. 1. an instrument used to measure temperature
  2. 3. change that occur in temperature with distance
  3. 4. a layer where meteorites burn up
  4. 7. an instrument used to measure humidity and dew points
  5. 8. an instrument used to measure wind direction
  6. 12. it enters the atmosphere through the burning of fossil fuels
  7. 14. temperature decreases as altitude increases
  8. 16. a layer that protects us from UV radiation
  9. 19. a gas that existed in our early atmosphere
  10. 20. occurs when massive solar storms cause the Van Allen radiation belts to become overloaded with particles
  11. 21. it results from livestock
  12. 23. produces most of the greenhouse gases