Ozone in the upper atmosphere has been depleted by

Question

Question 7 options:

A)

carbon dioxide.

B)

sulfur dioxide.

C)

oxygen.

D)

chlorofluorocarbons.

Answer 1

The correct answer is:

D) chlorofluorocarbons.

Chlorofluorocarbons (CFCs) have been identified as a significant factor in the depletion of ozone in the upper atmosphere, particularly in the stratosphere, where the ozone layer is located. CFCs release chlorine atoms when they are broken down by ultraviolet (UV) radiation, leading to the destruction of ozone (O3) molecules.