The relative contributions of carbon dioxide (CO2), nitrous oxide (N2O), chlorofluorocarbons (CFCs) and methane (CH4) towards global warming are
1
CO2 > CFCs > CH4 > N2O
2
CO2 > CH4 > CFCs > N2O
3
CO2 > CH4 > N2O > CFCs
4
CO2 > N2O > CH4 > CFCs
5
Question Not Attempted