State whether the following statement is true or false:
Human excreta can be used in biogas plants.

Answer

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement in question is "Human excreta can be used in biogas plants." We need to determine if this statement is true or false.

2. **Definition of Biogas Plants**: Biogas plants are facilities that produce biogas, which is a mixture of gases generated by the breakdown of organic matter in the absence of oxygen.

3. **Role of Human Excreta**: Human excreta is considered organic matter. In biogas plants, various types of organic waste, including human excreta, can be used as feedstock to produce biogas.

4. **Benefits of Using Human Excreta**:
- **Sanitation**: Using human excreta in biogas plants helps in maintaining proper sanitation. It ensures that waste is managed properly, reducing the risk of environmental contamination.
- **Energy Production**: The biogas produced can be used as a fuel source, providing energy for cooking and other purposes.

5. **Conclusion**: Since human excreta can indeed be used in biogas plants and has benefits for sanitation and energy production, the statement is true.

**Final Answer**: The statement "Human excreta can be used in biogas plants" is **True**.

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