1.

The relative contributions of carbon dioxide (CO2), nitrous oxide (N2O), chlorofluorocarbons (CFCs) and methane (CH4) towards global warming are1. CO2 > CFCs > CH4 > N2O2. CO2 > CH4 > CFCs > N2O3. CO2 > CH4 > N2O > CFCs4. CO2 > N2O > CH4 > C

Answer» Correct Answer - Option 3 : CO2 > CH4 > N2O > CFCs

The correct answer is CO2 > CH4 > N2O > CFCs.

  • The relative contributions towards Global Warming in Descending order:
    • Carbon dioxide (CO2)
    • Methane (CH4)
    • Nitrous oxide (N2O)
    • Chlorofluorocarbons (CFCs)

  • Global warming is the long-term heating of Earth’s climate system observed since the pre-industrial period (between 1850 and 1900) due to human activities, primarily fossil fuel burning.
    • It increases heat-trapping greenhouse gas levels in Earth’s atmosphere.
    • The term is frequently used interchangeably with the term climate change, though the latter refers to both human- and naturally produced warming and the effects it has on our planet.
    • It is most commonly measured as the average increase in Earth’s global surface temperature.


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