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Question

_______ protects us from the harmful UV rays of the sun.

A
Oxygen
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B
Ozone
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C
Nitrogen
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D
Carbon dioxide
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Solution

The correct option is B Ozone
Ozone is a gas found in the upper layer of the atmosphere (stratosphere). It is found at about 16 km height from the earth’s surface. It prevents ultraviolet rays coming from the sun to reach the earth. Thus, it protects us from the harmful UV rays of the sun.

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