How do yeast decompose?

Yeast decomposes organic matter through a process called fermentation, where it breaks down sugars in the absence of oxygen. This anaerobic process converts sugars into alcohol and carbon dioxide, releasing energy that the yeast uses for growth and reproduction. As yeast consumes the sugars, it contributes to the decomposition of the material, facilitating nutrient cycling in the ecosystem. Additionally, yeast can also decompose other organic compounds under aerobic conditions, further aiding in the breakdown of organic matter.