UV rays are said to be harmful to human beings a)why is watee treated with UV rays potable? b)How are we protected from harmful UV rays in our environment?
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It is because it kills most of the bacteria of the water .But still it does not purify contaminents sich as chlorine abd other major impurities
We are protected by UV rays due to the Ozone layer of the atmosphere which reflects all the uv rays of the sun back into the space
We are protected by UV rays due to the Ozone layer of the atmosphere which reflects all the uv rays of the sun back into the space
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upar wala Shi hai .........
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