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 by
6
Answer:
(a)
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Answered by
6
Answer:
A) A biological process of nitrogen fixing bacteria present in the soil.
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