What are the composition of biogas?

Explanation

### Step-by-Step Solution:

1. **Definition of Biogas**:
- Biogas is a mixture of gases produced by the microbial activity of anaerobic bacteria that decompose organic matter.

2. **Major Component**:
- The primary component of biogas is **Methane (CH₄)**, which constitutes about **50-70%** of its composition. Methane is highly inflammable, making biogas a useful fuel source.

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