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Question: Which of the following adds/add nitrogen to
the soil ?
1. Execretion of urea by animals
2. Burning of coal by man
3. Death of vegetation
Select the correct answer using the codes given

1)1 only
2)2 and 3 only
3)1 and 3 only
4)1, 2 and 3

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Exam Exam: CSAT IAS 2013

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