Which of the following is a greenhouse gas?

Correct answer: (e) None of the above / More than one of the above

Explanation

Due to the presence of greenhouse gases, the atmosphere behaves like a greenhouse. The atmosphere allows incoming solar radiation to pass through, but it absorbs most of the long-wave radiation emitted upward from the Earth’s surface. Gases that absorb long-wave radiation are called greenhouse gases. Some major greenhouse gases include carbon dioxide, methane, nitrous oxide, chlorofluorocarbons (CFCs), and ozone. Therefore, since more than one option is correct in this question, the correct answer is option (e).