Multiple choice

Which of the following pollutants causes ozone holes in the ozone layer?

  1. CO

  2. CFC

  3. SO2

  4. CO2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

CFC causes ozone holes in the ozone layer. The hole in the ozone layer happens because the ozone in the stratosphere is destroyed by chlorine and bromine from halogen atoms. These atoms come from man-made halocarbon refrigerator gases i.e. chlorofluorocarbons or CFCs which are emitted at ground level but move up into the ozone layer.  

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