Welcome to the troposphere. The troposphere is where the weather happens. It stretches 0-16 km. It is the layer with the most pressure. Airplanes travel here. It is the thinnest at the North and South poles. It is the innermost layer in our atmosphere.
The Story of Alien Joe Alien Joe in the troposphere.
In the stratosphere you can find the the ozone layer. The stratosphere is 33,000 feet. It is very cold here. Bacterial life survives in the stratosphere, making it a part of the biosphere