The Earth's Atmosphere

 

These are the layers of the Earth's Atmosphere, the Troposphere is the place we live where we can breath oxygen, but we only breath 20.95% of the oxygen while 78.08% of Nitrogen is the more of 

what we breath, and a little of the other gases. Without the ozone layer the sun would burn us very quickly, without the atmosphere there would be no life on earth. The Atmosphere is all of the layers, beyond the Exosphere is space without any type of gasses. If the clouds had disappeared the noise on earth would be entirely quiet without the air.