thermal characteristics (temperature changes), chemical composition, movement, and density. Each of the layers are bounded by "pauses" where the greatest changes in thermal characteristics, chemical ...

As much as we should appreciate and protect the atmosphere that immediately embraces this planet, the other layers of the atmosphere are essential too and provide services we may not readily recognize ...

The Earth has a fascinating atmosphere that contains several unique layers The Troposphere is the layer that we live in, it starts at the surface but the height often varies to about 9-12 miles up.