Multiple choice

Which of the following are ozone depleting substances?

  1. Chlorofluorocarbons (CFCs)

  2. Hydrofluorocarbons (HFCs)

  3. Hydrochlorofluorocarbons (HCFCs)

  4. Both B and C

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

Both Hydrofluorocarbons (HFCs) and Hydrochlorofluorocarbons (HCFCs) are substances that contribute to ozone depletion or global warming, and are regulated under international agreements.