Question

1. according to the diagram, in what atmospheric layer do airplanes fly?

ozone layer
stratosphere
troposphere

Explanation:

Commercial airplanes typically fly in the stratosphere because this layer has stable air conditions, minimal turbulence, and sufficient oxygen for jet engines. The ozone layer is a part of the stratosphere, not a distinct atmospheric layer for flight, and the troposphere has more turbulence and weather that is less ideal for most commercial flight.

Answer:

B. stratosphere