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The nitrogen molecules present in air can be converted into nitrates and nitrites by

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asked Sep 16, 2017 in Biology by Golu (37,045 points) ● 19 ● 169 ● 608

The nitrogen molecules present in air can be converted into nitrates and nitrites by

(a) a biological process of nitrogen fixing bacteria present in soil
(b) a biological process of carbon fixing factor present in soil
(c) any of the industries manufacturing nitrogenous compounds
(d) the plants used as cereal crops in field

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answered Sep 17, 2017 by Ankit Agarwal (28,847 points) ● 7 ● 33 ● 104
selected Sep 17, 2017 by Golu
 
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Correct answer is (a) a biological process of nitrogen fixing bacteria present in soil 

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