Question

Why are not nitrogen and oxygen called greenhouse gases?
(Please answer in brief and to the point)

Answer 1

Naturally occurring greenhouse gasesinclude water vapor, carbon dioxide, ozone, methane and nitrous oxide, and together create a natural greenhouseeffect. The greenhouse gases have three or more atoms in their molecules. CO2, H2O, CFC all have three atoms, while O2 (Oxygen) and N2(Nitrogen) only have two.