Question

Which of the following does not contribute towards the greenhouse effect?

• A. $C{O}_2$
• B. Methane
• C. $O_2$
• D. Nitrous oxide

Answer 1

The correct option is C $O_2$

The greenhouse effect is a process that occurs when gases in the Earth's atmosphere trap the Sun's heat. Without this process, life would not have been possible on the Earth. But now, it threatens life. $C{O}_2$ is one of the gases responsible for this effect.
Other gases like methane, nitrous oxide, and water vapour also contribute to this effect. Like $C{O}_2$ , they are also called greenhouse gases. $O_2$ is not a greenhouse gas.