Earth's surface is considered a dark body of which infrared radiation is emitted from incoming solar radiation.
As the infrared moves upward it crosses several layers of atmosphere. It is the chemical composition of these atmospheres that interact with the infrared to control Earth's benevolent temperatures.
It is the chemical composition of these atmospheric layers that are vital to life on Earth. When there are IMBALANCES Earth is in peril, both it's ozone layers (which are nothing more than O3) and it's greenhouse gas layers that keep every human being warm.
