Give examples to prove that microbes release gases during metabolism.

Explanation

**Step-by-Step Solution:**

1. **Understanding Microbial Metabolism**: Microbes, such as bacteria and fungi, undergo metabolic processes that can involve fermentation or decomposition. During these processes, they can produce various gases as byproducts.

2. **Example 1 - Fermentation in Dough**:
- When preparing dough for foods like chole bhature, idli, or dosa, specific bacteria (like yeast) are added to the mixture.
- These bacteria ferment the sugars present in the dough, leading to the production of carbon dioxide (CO2).
- The CO2 gas gets trapped in the dough, causing it to rise and become puffy. This is a clear indication of gas release during microbial metabolism.
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