The greatest concentration of ozone is in the
A) thermosphere.
B) mesosphere.
C) lithosphere.
D) troposphere.
E) stratosphere.

Question

Quizplus · Accepted Answer

The greatest concentration of ozone is found in the stratosphere, which is the layer of the Earth's atmosphere located between the troposphere (where we live) and the mesosphere. This is because ozone is created when oxygen molecules in the atmosphere are broken apart by ultraviolet radiation from the sun, and then recombine with other oxygen molecules to form ozone. The stratosphere contains the highest levels of UV radiation and is therefore where most of the ozone is formed and stored.

The Greatest Concentration of Ozone Is in the