climate change

3. nitrous oxides are an example of
7. sea ice is frozen what
11. can be estimated by studying the relative amounts of oxygen isotopes present in the water in the ice
13. amount of ice ages earth has experienced
15. scientists fear the Great Ocean Conveyor may weaken or be stopped as what kind of water flows in from Greenland
17. Cycles that affect the amount of global solar radiation received and influence glacial-interglacial cycles
19. types of gas that change in amounts depending on the season and other factors
20. eating less of this would help reduce greenhouse gases
21. cyanobacteria evolved the ability to perform this

1. this population of animals is rapidly decreasing due to the loss of sea ice
2. temperature data prior to the 19th century is the result of proxies, or indirect what
4. Since 1958 daily measurements of atmospheric carbon dioxide levels have been taken at an observatory in
5. the study of intentionally and artificially changing the natural processes of earth
6. types of gas that do not change day to day
8. this cycle describes the movement of water through evaporation, precipitation, runoff, and infiltration
9. involves adjusting our lives and society to the expected future climate
10. the thin layer that surrounds the earth
12. strategies are designed to reduce emissions and stabilize the levels of greenhouse gases already in the atmosphere
14. one concern of rising sea levels is
16. a measurement of how reflective a surface is
18. area between the stratosphere and troposphere