Question

What is fermentation? plzz give easy description

Answer 1

Anaerobic decomposition or sugars and starches in organic material into ethyl alcohol, carbon dioxide etc... by micro organisms such as bacteria and yeast.
Hope this helps you friend
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Answer 2

hey mate ,

   here is your answer :)

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Fermentation, chemical process by which molecules such as glucose are broken down anaerobically. More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old. The frothing results from the evolution of carbon dioxide gas, though this was not recognized until the 17th century. French chemist and microbiologist Louis Pasteur in the 19th century used the term fermentation in a narrow sense to describe the changes brought about by yeasts and other microorganisms growing in the absence of air (anaerobically); he also recognized that ethyl alcohol and carbon dioxide are not the only products of fermentation.