Question

UV rays cause cancer but in the stratosphere, the same UV rays are helping us, how?

• A. They divert harmful UV rays back to the sun
• B. UV rays reach the earth’s surface and then bounce back carrying ozone to the stratosphere.
• C. UV rays are not present in the stratosphere.
• D. They convert oxygen in the stratosphere into ozone.

Answer 1

The correct option is D They convert oxygen in the stratosphere into ozone.

Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by the sun and artificial sources, such as tanning beds. While it has some benefits for people, including the creation of Vitamin D, it also can cause health risks. Our natural source of UV radiation: The sun.