Which of the following gases protects us from harmful sun rays?
A
Oxygen
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B
Carbon dioxide
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C
Nitrogen
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D
Ozone
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Solution
The correct option is C Ozone The ozone layer is a belt of naturally occurring ozone gas that is 20-30 kilometers above Earth and serves as a shield from the harmful ultraviolet radiation emitted by the sun. The ultraviolet rays cause damage to skin