Ozone:
A)is considered beneficial at the surface of the Earth.
B)protects life on Earth by filtering harmful UV radiation from sunlight.
C)is rapidly depleting for reasons scientists do not yet fully understand.
D)is concentrated in the mesosphere.

Question

Quizplus · Accepted Answer

Ozone is essential for protecting life on Earth by filtering harmful UV radiation from sunlight. It is present in the upper atmosphere in the ozone layer, which absorbs most of the sun's high-frequency ultraviolet light. Ozone depletion is a concern, but it is mainly happening in the upper atmosphere due to human-made chemicals such as chlorofluorocarbons (CFCs). Ozone at the surface is harmful to human health and the environment.