Use the drop-down menus to complete each sentence about the layers of the atmosphere. If the
✔ mesosphere
did not exist, Earth might be destroyed by chunks of rock from space.

The
✔ stratosphere
is located 12 to 50 kilometers from Earth’s surface.

Both the
✔ mesosphere and troposphere
get colder as altitude increases.

The ozone in the
✔ stratosphere
protects people from ultraviolet (UV) radiation.

The
✔ thermosphere
has the highest temperature of any layer in Earth’s atmosphere.