climate change

1. a period of time where the Earth’s overall surface temperature is lowered enough that glaciers form at the poles and in mountainous areas.
6. weakened the greenhouse effect due to the removal of carbon dioxide and oxidation of methane.
7. Nitrogen oxygen argon
10. permanent layers of ice covering a tract of land, especially in the polar regions.
11. contains the air we breathe and every aspect of what we call weather.
12. Water vaper Carbon Dioxoide Nitrogen Oxide Ozone CFCS Methane
14. glaciers are growing and advancing
15. shows a layer of ash that settled on the ice sheet about 21,000 years ago.

2. Measurement of how reflective a surface is
3. the thin layer of gases that surrounds the earth.
4. has a much thinner atmosphere, with no greenhouse effect.
5. a very dry and less dense layer above the troposphere.
8. When a hemisphere is facing the sun, about half of incoming solar radiation passes through the atmosphere and warms the Earth.
9. frozen sea water that floats
13. formed as more ice is laid down each year