What atmospheric layer is situated between the stratosphere and thermosphere?

The atmospheric layer situated between the stratosphere and thermosphere is the mesosphere. This layer extends roughly from about 50 kilometers (31 miles) to about 85 kilometers (53 miles) above Earth's surface. It is characterized by a decrease in temperature with altitude, contrasting with the stratosphere, where temperatures increase with altitude due to the presence of the ozone layer, which absorbs UV radiation.

The mesosphere plays an important role in atmospheric science, as it is where most meteors burn up upon entering the Earth's atmosphere, creating spectacular meteor showers. The unique conditions of the mesosphere, including its temperature structure and density, influence atmospheric dynamics and contribute to the overall behavior of the Earth’s atmosphere.

The other options refer to different layers: the troposphere, where we experience weather, is below the stratosphere and is the lowest layer; the ionosphere is a region of the upper atmosphere, located in the thermosphere, known for its ionization effects; the exosphere is the outermost layer of the atmosphere, beyond the thermosphere, where atmospheric particles are extremely sparse.