B3 2020 Kulkarni

12345678910111213141516171819202122232425
Across
  1. 5. composed of mostly nitrogen and oxygen
  2. 6. solar radiation ionizes gas molecules in this layer in the thermosphere
  3. 7. most abundant atmospheric gas
  4. 9. a planet absorbs more energy from the sun than it can radiate back into space
  5. 16. houses ozone layer
  6. 18. greenhouse gas used in medicine
  7. 20. a greenhouse gas in which too much can deplete the ozone layer
  8. 22. air above the earth's surface that is essential for life on earth
  9. 23. most abundant greenhouse gas
  10. 24. a type of agriculture that is a human activity that releases methane into the air
  11. 25. natural production comes from biological materials in the carbon cycle
Down
  1. 1. second most abundant atmospheric gas
  2. 2. human activity that releases methane into the air
  3. 3. comes from emission of livestock and agriculture
  4. 4. gases that absorb infrared radiation
  5. 8. warming of the surface & atmosphere
  6. 10. the most potent and longest lasting greenhouse gases emitted by human activities
  7. 11. formed by the interaction of the solar wind with earth's magnetic field
  8. 12. hottest layer in atmosphere
  9. 13. a boundary between two spheres
  10. 14. coldest layer in atmosphere
  11. 15. the early gases came from the outgassing of this
  12. 17. releases greenhouse gases into the air
  13. 19. the greenhouse effect causes this to emit in all directions
  14. 21. a colorless odorless reactive gas composed of three oxygen atoms