Across
- 4. the IPCC reported that warming of the climate system is...
- 6. very dry and less dense layer
- 10. season where there is less photosynthesis and more carbon dioxide release
- 13. period when Earth's atmosphere was mostly carbon dioxide and nitrogen
- 14. thing layer of gases that surrounds the Earth
- 16. occurs when coral polyps eject the symbiotic algae that live with them under stressful environmental conditions
- 17. hurricane _________ and intensity has increased since 1980
- 18. darker areas on the sun's surface created by intense magnetic fields
- 19. underwater current fueled by the mixing of warm and cold salt water
- 21. frozen seawater that floats on the ocean's surface
Down
- 1. the ice age period that lasted from the 16th-19th centuries
- 2. season where there is more photosynthesis and more carbon dioxide absorption
- 3. planet that has a much thinner atmosphere, with no greenhouse effect
- 5. contains the air we breathe and the Earth's weather
- 7. what has lowered because of the melting of ice sheets into ocean water, this is a measurement of how reflective a surface is
- 8. place where an observatory takes daily measurements of atmospheric carbon dixoide levels
- 9. due to the melting of ice sheets, the Earth's sea level is...
- 11. permanent layers of ice covering a tract of land
- 12. period of time where the Earth's surface temperature is lowered enough that glaciers form at the poles
- 15. main proxy that is drilled into the glaciers in Antarctica
- 20. type of greenhouse gas that was released by human activity