Multiple choice

Due to greenhouse effect, the average temperature of Earth's atmosphere is gradually increasing. This is called global warming. Which of the following are not greenhouse gases?

  1. Methane and oxygen

  2. Oxygen and nitrous oxide

  3. Nitrous oxide and carbon dioxide

  4. Oxygen and nitrogen

  5. Carbon dioxide and methane

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oxygen and nitrogen are not greenhouse gases.