Greenhouse effect refers to which of the following?
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Cooling of earth
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Trapping of UV rays
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Production of cereals
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Warming of earth
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D
Correct answer
Explanation
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere. If a planet's atmosphere contains radioactively active gases (greenhouse gases), the atmosphere will radiate energy in all directions.