Multiple choice

chlorofluorocarbons are causing problems with the ozone by...

  1. burning up the atmosphere

  2. breaking up the oxygen

  3. breaking up ozone molecule

  4. blocking out the ultraviolet radiation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CFCs release chlorine atoms when they reach the stratosphere. These chlorine atoms react with ozone molecules (O3), breaking them apart and reducing the ozone concentration.

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