What People animals and plants live in which layer of the atmosphere?

In the Earth's atmosphere, the troposphere is where most life exists, including humans, animals, and plants, as it contains the air we breathe and weather patterns. Above the troposphere is the stratosphere, which is home to some microorganisms and certain types of birds that can fly at high altitudes. The mesosphere, thermosphere, and exosphere have extremely thin air and are not conducive to life as we know it, although some satellites and space probes operate in these layers.