| A | B |
|---|
| stratosphere | where the ozone layer is found |
| troposphere | where most weather occurs, layer we live in |
| mesosphere | where meteors are found and the middle layer |
| thermosphere | named for it's high temperatures and the thickest layer |
| exosphere | last layer of the Earth's atmosphere |
| nitrogen | makes up 78% of the air we breathe |
| oxygen | makes up 21% of the air we breathe |
| CFC's (chlorofluororcarbons) | chemical compounds that have destroyed the ozone layer |
| ozone layer | absorbs most of the harmful rays from the sun |
