Nitrogen comprises 78 to 79 per cent of the earth’s atmosphere. It is an important constituent of plant and animal protein, which forms the structural and functional component of cells. Nitrogen is also present in DNA, RNA, vitamins, urea and alkaloids. Before studying the nitrogen cycle, you should understand the following processes.
How is nitrogen returned to atmosphere? | |||
Right Option : C | |||
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Nitrogen comprises ________________ to 79 per cent of the earth’s atmosphere. | |||
Right Option : D | |||
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In nitrogen cycle the bacteria, which change proteins to ammonia, are known as ______________ | |||
Right Option : C | |||
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