Multiple choice

Which of the following chemicals is linked with the depletion of ozone in the atmosphere?

  1. Chlorofluorocarbons

  2. Hydrogen peroxide

  3. Carbon dioxide

  4. Sulphur dioxide

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Chlorofluorocarbons (CFCs) are synthetic compounds that break down in the stratosphere and release chlorine atoms, which catalytically destroy ozone molecules. This was the primary cause of the ozone hole discovery in the 1980s.