Which of the following are greenhouse gases?
(i) Water Vapour
(ii) Carbon Dioxide
(iii) Nitrous Oxide
(iv) Methane
(i), (ii), (iii) and (iv)
(i) Water Vapour
(ii) Carbon Dioxide
(iii) Nitrous Oxide
(iv) Methane
They are all greenhouse gases and play a majpor role in creating the greenhouse effect.