SML Weather & Climate
The ozone layer is basically a layer where the earth has breathable oxygen and nitrogen, and oxygen is what humans breathe. Even though the layer might be ⅕ oxygen, the wildlife actually helps the oxygen, and that makes more of the earth have more oxygen to breathe. Though even the earth has multiple layers, it is not the time to talk about it. Though the ozone layer is the most important one. This layer is also the barrier between direct sunlight and the earth, stopping it but allowing some heat to go into the earth.