Question
Environment & EcologyEcology FundamentalsBiogeochemical CyclesEasy
Question details
- Type:
- Statement based
- Skill:
- Concept understanding
- Tags:
- Biogeochemical Cycles
- Related topics:
- Soil Fertility, Nutrient Deficiency and Soil Testing
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Which of the following adds/add nitrogen to the soil? 1. Excretion of urea by animals 2. Burning of coal by man 3. Death of vegetation Select the correct answer using the codes given below.
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Question 34 · Biogeochemical Cycles · Environment & Ecology · UPSC Prelims 2013 (GS)