Which of the following is not concerned with biotechnology?

Options

A. Biofertilizers
B. Sewage treatment
C. Wood seasoning
D. Biogas production

Answer

**Step-by-Step Solution:**

1. **Understanding Biotechnology**: Biotechnology is defined as the use of living organisms or their products to develop or create useful products. It often involves processes that utilize biological systems or living organisms.

2. **Analyzing the Options**:
- **Option 1: Biofertilizers**: Biofertilizers involve the use of living organisms (like bacteria and fungi) to enhance soil fertility through the decomposition of organic matter. This is a clear application of biotechnology.

- **Option 2: Sewage Treatment**: Sewage treatment processes often involve the use of microbes to decompose organic waste in sewage. This method utilizes living organisms, making it a part of biotechnology.

- **Option 3: Wood Seasoning**: Wood seasoning refers to the process of drying timber to reduce moisture content. This process does not involve the use of living organisms, as it is primarily a physical process. Therefore, it is not related to biotechnology.

- **Option 4: Biogas Production**: Biogas production involves the anaerobic digestion of organic matter by microorganisms, resulting in the production of biogas. This process utilizes living organisms, thus it falls under biotechnology.

3. **Conclusion**: After analyzing all the options, it is clear that **wood seasoning** is the only option that does not involve living organisms and is therefore not concerned with biotechnology.

**Final Answer**: Wood seasoning is not concerned with biotechnology.

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