Multiple choice

Which of the following gases is/are not a greenhouse gas?

  1. Methane

  2. Carbon dioxide

  3. Hydrogen

  4. Chlorofluorocarbons
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The primary greenhouse gases in Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide and ozone. Without greenhouse gases, the average temperature of Earth's surface would be about −18°C (0°F), rather than present average of 15°C (59°F).

Keep practicing — related questions