Climate Change

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Across
  1. 1. absorbing and retaining carbon
  2. 2. attempts to stabilize greenhouse gasses
  3. 4. how the ratio of carbon-12 to carbon-13 has changed since the industrial revolution
  4. 6. number of greenhouse gasses
  5. 8. the number of sunspots fluctuates every __ years
  6. 9. the ability cyanobacteria evolved during this period
  7. 14. percent of argon in the atmosphere
  8. 15. percent of oxygen in the atmosphere
  9. 17. how sea ice is changing because of climate change
  10. 18. was the carbon cap and trade bill passed
  11. 19. what glaciers are doing around the world
Down
  1. 1. the isotope of carbon plants use for photosynthesis
  2. 3. adjusting society to the expected future
  3. 5. how sea level is changing because of climate change
  4. 7. changing natural processes intentionally and artificaly
  5. 10. the amount of scientists that agree about climate change
  6. 11. percent of nitrogen in the atmosphere
  7. 12. percent of infrared energy absorbed by land and sea
  8. 13. what the earths temperature does during a glacial period
  9. 16. number of variable gasses