Multiple choice

Which of the following causes ozone layer depletion?

  1. oxygen

  2. Sodium silicate

  3. Mercury

  4. Methyl Chloroform

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

Methyl chloroform is a synthetic chemical that, like CFCs, contains chlorine and contributes to the depletion of the stratospheric ozone layer.