Multiple choice

Which of the below listed greenhouse gases is/are entirely anthropogenic in origin?

  1. Carbon dioxide

  2. Nitrous oxide

  3. CFCs

  4. Methane
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

CFCs are entirely anthropogenic in origin. CFCs are phased out via the Montreal Protocol due to their part in ozone depletion. However, the atmospheric impacts of CFCs are not limited to its role as an active ozone reducer. This anthropogenic compound is also a greenhouse gas, with a much higher potential to enhance the greenhouse effect than CO2.  

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