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Question

What is greenhouse effect? Give an example of a greenhouse gas. [3 MARKS]

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Solution

Definition: 2 Marks
Example: 1 Mark

Carbon dioxide and water vapour absorb infrared radiations coming to the earth and partly reflect it back to the earth's surface. Due to this, the surface of earth gets heated up. This phenomenon is called greenhouse effect.
An example of a greenhouse gas is carbon dioxide.

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