Across
- 7. Large scale removal of trees
- 9. 21% of Earth's atmosphere
- 12. Boundary where two tectonic plates collide
- 13. Any gas that traps in infrared radiation
- 15. The warmest layer of the atmosphere
- 16. This inert gas only makes up about 1% of our air
- 18. The San Andreas _____ is on a transform plate boundary
- 20. Found mostly at plate boundaries; release gasses
Down
- 1. Burning fossil fuels makes this greenhouse gas
- 2. Earth's _____ receives about 51% on the sun's energy
- 3. Most abundant gas in our atmosphere
- 4. Greenhouse gas produced by landfills and cows
- 5. Process responsible for making most of our oxygen
- 6. Atmospheric layer containing life and weather
- 8. Boundary where tectonic plates pull apart
- 10. The ozone _____ is found in the stratosphere
- 11. Global _____ is the heating of Earth's atmosphere
- 14. The greenhouse _____ keeps Earth warm and livable
- 17. Gas that absorbs UV radiation
- 19. Clouds can both absorb and _____ solar energy