Multiple choice

Arrange the following greenhouse gases in the decreasing order of the greenhouse effect caused by them.

  1. Methane
  2. Carbon Dioxide
  3. Water Vapour
  4. Ozone

  1. 2, 1, 3, 4

  2. 2, 1, 4, 3

  3. 3, 2, 1, 4

  4. 3, 1, 2, 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The major greenhouse gases are water vapour, which causes about 36 - 70% of the greenhouse effect (excluding clouds); carbon dioxide (CO2), which causes 9 - 26%; methane (CH4), which causes 4 - 9%; and ozone, which causes 3 - 7%.

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