BOD is connected with:
Correct answer: C. Both (a) & (b)
- A. Organic matter
- B. Microbes
- C. Both (a) & (b)
- D. None of these
Explanation
BOD depends on organic matter because it provides the material for decomposition, and on microbes because they consume oxygen while decomposing it. Thus both options (a) and (b) are involved.
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