Answer:
1) If the mesosphere did not exist, Earth might be destroyed by chunks of rock from space.
2) The stratosphere is located 12 to 50 kilometers from Earth's surface.
3) Both the troposphere and mesosphere get colder as altitude increases.
4) The ozone in the stratosphere protects people from ultraviolet (UV) radiation.
5)The thermosphere the highest temperature of any layer in Earth's atmosphere.