Question

What is fermentation?​

Answer 1

Explanation:

Fermentation is the breakdown of organic substances by organisms to release energy in the absence of oxygen.

Answer 2

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Fermentation is the process in which a substance breaks down into a simpler substance. Microorganisms like yeast and bacteria usually play a role in the fermentation process, creating beer, wine, bread, kimchi, yogurt and other foods.

$\textit{hope this helps you}$