EARTH

2. and oxygen earth is 99% what?
8. here temperature from the sun effects this layer
11. In the stratosphere what is a major obstacle?
13. the body or air the surrounding earth/envelope of gasses held around the earth filters what comes in and out of earth
14. this has very few molecules that can escape into space
15. gasses These are colorless, tasteless, formless, and they blend together so well
16. Thomas Made the comparison between the “world's biggest memory” in 1973

1. closest to the earth contains the air humans breath
3. What is a major obstacle in the troposphere?
4. Borialis This happens when high energy particles collide with the sun
5. when is the troposphere thinnest?
6. the air is especially thin meteors burn up here
7. Where the Ozone layer is
9. layer Absorbs most of the sun's ultra violet radiation
10. Boundary for the exosphere
12. line Marks the altitude where a traditional aircraft can no longer effectively fly