Description : Which of the following is not a greenhouse gas? (1) Water vapour (2) O2 (3) O3 (4) CO2
Last Answer : (2) O2 Explanation: Greenhouse gases are those that can absorb and emit infrared radiation, but not radiation in or near the visible spectrum. The most abundant greenhouse gases in Earth's atmosphere are: Water ... , Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Ozone (O3) and CFCs.