troposphere: initial layer of atmosphere, extendes from Earth's surface up to 11 miles up. This is the part of the atmosphere people live in.
Stratosphere: Up to 31 miles above Earth's surface. Some of Earth's gases become trapped, here. Not a lot of water vapor.
Mesosphere: Very little oxygen in this layer. It occurs at about 56 miles above Earth's surface.
Thermosphere: 37 miles above the Earth. Commonly called the upper atmosphere. Gases are thinner here.
Exosphere: is the outermost layer of the atmosphere, extending 6200 miles above the Earth. This is where satellites orbit the Earth.