Trapping of environmental heat by the gases present in atmosphere like carbon dioxide, methane, ozone and dust is known as:
A
Ozone layer
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B
Greenhouse effect
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C
Radioactive effect
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D
Solar effect
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Solution
The correct option is B Greenhouse effect The greenhouse effect is a process caused due to increase in the quantities of gases such as carbon dioxide in the air. These gases trap the heat from the sun and cause a gradual rise in the temperature of the Earth's atmosphere. When the sun's energy reaches the Earth's atmosphere, some of it is reflected back but the rest is trapped in Earth's atmosphere by greenhouse gases like carbon dioxide, methane, water vapour, etc.