Soil Organic Matter (SOM) serves not only as a reservoir of all the required plant nutrients, but it:
Correct answer: D. All of these
- A. Provides energy for the microbial
- B. Maintains the productivity of soil
- C. Gives structure to the soil
- D. All of these
Explanation
Soil organic matter feeds microorganisms, releases and stores nutrients, improves aggregation and structure, and supports long-term soil productivity. Since each listed function is valid, the inclusive option is correct.
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