(a) Rearrange the following greenhouse gases in increasing order of their relative contribution to the total global warming :
N2O, CFC; CO2; C2H4,
(b) What is the effect of global warming on polar icecaps ? Comment on its possible ecological impact.
(a) C2H4 →N2O → CFC → CO2 / N2O → CFC → C2H4 → CO2 (Highest)
(b) (Global warming) → Rise in Atmospheric temperature → polar ice melts → increase in sea level → coastal land mass submerge.
