Environment & Ecology · Biogeochemical Cycles
Consider the following statements about the nitrogen cycle: 1. Nitrogen in the atmosphere cannot be directly used as a nutrient by most plants and animals. 2. Ammonia can be a direct source of nitrogen for some plants. 3. The nitrates present in the soil are reduced to nitrogen gas by the process of denitrification. Which of the statements given above are correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 12 and 3 only
- 23 only
- 31 and 2 only✓
- 41, 2 and 3
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1 and 2 only
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