1The stratosphere is a stable layer of the atmosphere where the air is very dry and cold.
2Do you know what percentage of the Earth's atmosphere is made up of the stratosphere?
3The ozone layer is located in the lower part of the stratosphere and protects the Earth from ultraviolet radiation.
4Scientists are studying the stratosphere to understand how it affects the Earth's climate.
5Aircraft typically cruise at altitudes within the stratosphere, where the air is more stable and there is less turbulence.