Respuesta :

Yeast is a substance which contributes to beer brewing by producing ethanol during alcohol fermentation.

What is Fermentation?

This a process in which  carbohydrate is converted into an acid or alcohol. A common fungus used by brewing companies in fermentation processes is referred to as Yeast.

It converts Sugar to the following products:

  • ethanol,
  • CO2
  • Heat

Read more about Fermentation here https://brainly.com/question/546578