How does cellulose fermentation contribute to the breakdown of plant material in the digestive systems of certain animals?

Cellulose fermentation is a process in which cellulose, a complex carbohydrate found in plant cell walls, is broken down by microorganisms in the digestive systems of certain animals. These microorganisms produce enzymes that can break down cellulose into simpler sugars that the animal can then digest and use for energy. This process allows animals, such as cows and termites, to extract nutrients from plant material that they would not be able to digest otherwise.