Multiple choice

Which of the following pollutants is/are particularly harmful to the ozone layer?

  1. Persistent free radicals

  2. Radioactive pollutants

  3. Ammonia (NH3)

  4. Chlorofluorocarbons

  5. Particulates

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

C hlorofluorocarbons (CFCs) are 'harmful to the ozone layer. They are emitted from products currently banned from use.