Multiple choice

Ozone layer in stratosphere is effected by�

  1. Excess CO2

  2. Excess CO

  3. Chlorofluorocarbon

  4. Low rainfall

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

Chlorofluorocarbons, when released into the atmosphere, migrate to the stratosphere where UV radiation breaks them down, releasing chlorine atoms that catalytically destroy ozone molecules, leading to the ozone hole.