Question

Green house effect is warming due to

• A. Infra-red rays reaching earth
• B. Moisture layer in atmosphere
• C. Increase in temperature due to increase in carbon dioxide concentration of atmosphere
• D. Ozone layer of atmosphere

Answer 1

The correct option is C Increase in temperature due to increase in carbon dioxide concentration of atmosphere

Greenhouse effect refers to the absorption of the sun's radiations by the atmospheric gases like carbon dioxide and trapping of these radiations within the atmosphere. These are subsequently reflected onto the earth's surface and cause an increase in the global temperature, called global warming. Infra-red radiations reaching earth will not increase the temperature. Moisture layer in the atmosphere does not show the greenhouse effect. Ozone layer in atmosphere absorbs the UV within stratosphere so that they do not reach the earth's surface.

Hence, the correct answer is 'Increase in temperature due to increase in carbon dioxide concentration of atmosphere'