Climate Change

3. Permanent layers of ice covering a tract of land
5. Reflective molecule that would be injected into the stratosphere
7. Where the daily atmospheric carbon dioxide concentrations are measured
8. The president who rolled back bills and dealing with climate change
9. The period when glaciers are growing and advancing
12. Thin layer of gases that surrounds the Earth
14. The layer that absorbs and scatters UV radiation
16. The number of years when sunspots tend to fluctuate
19. When gases trap some of the heat energy generated by the sun
20. Strategies that are designed to reduce emissions and stabilize the levels of greenhouse gases already in the atmosphere

1. Frozen seawater that floats on the ocean surface
2. The tendency of water to expand in volume as it warms
4. Uses reflective surface materials to reflect radiation back into space
6. Where the air that we breathe and the weather we experience is found
10. A greenhouse gas released from cows
11. The proxy used to measure the past of the atmosphere
13. The most common permanent gas in the atmosphere
15. The area of Earth most affected by the Great Ocean Conveyor Belt
17. The isotope of carbon that plants use for photosynthesis
18. The percent of infrared energy from the sun that is absorbed by the land and sea