climate change

2. underwater current fueled by the mixing of warm and cold salt water.
4. 16-19th centuries
5. absorb and retain carbon dioxide from the atmosphere.
8. used by plants in photosynthesis
10. where atmospheric carbon dioxide levels have been taken
13. adjusting our lives and society to the expected future climate.
14. study of intentionally and artificially changing natural processes of the Earth
17. dry, less dense, higher up
19. the epa was taking steps for carbon pollution restrictions
20. permanent layers of ice on land

1. strategies are designed to reduce emissions and stabilize the levels of greenhouse gases already in the atmosphere.
3. lasted 950-1250 ce, warmth exceeding current temps
6. frozen ice that floats on ocean surface
7. Earth’s overall surface temperature is lowered enough that glaciers form at the poles and in mountainous areas.
9. this process weakened the greenhouse effect
11. lower level of this in the Arctic causes warming to take place even faster,
12. darker areas on the sun created by intense magnetic fields
15. reflective molecules that would be injected into the stratosphere.
16. do not change,nitrogen,oxygen,argon
18. contains air we breathe and weather