Q16 of 287 Page 350

The ozone layer of the atmosphere blocks

Ozone layer blocks the UV radiations coming from sun and thus preventing organisms on earth from various diseases like cataract and preventing the immune system from weakening.

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The conversion of NO3 to N2 is called

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Nitromonas bacteria convert

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Which of the following contribute to green house effect?

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Who is popularly known as ‘water man’?