Question of the Day

Which of the following gases contributes more to the Earth's greenhouse effect than any other?




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Water vapor is responsible for about 50% of Earth's greenhouse effect, and it constitutes about 1% to 3% of the atmosphere. Carbon dioxide is responsible for about 12% of Earth's greenhouse effect, and it constitutes about 0.04% of the atmosphere. Methane is responsible for an unknown portion of Earth's greenhouse effect, and it constitutes about 0.0002% of the atmosphere.

DocumentationGreenhouse Gases