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One of the steps in the fixation of nitrogen by lightening is given below.2NO2(g) + H2O(l) HNO2(aq) + HNO3(aq) In this reaction, is the element nitrogen oxidized or reduced
Microorganisms
Very small, living organisms, usually single-celled, that can be found in all environments and can be bacteria, viruses, fungi, or protozoa.
Urine
A liquid by-product of metabolism in humans and many animals, expelled through the urinary system.
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Microscopic, single-celled organisms that thrive in diverse environments, some of which can cause diseases.
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Samples or examples used for scientific testing or analysis.
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