Bio-Decomposers, primarily fungi and bacteria are consumers that use waste materials and dead organism for food. Decomposers have the ability to break down dead organism into smaller particles and new compounds resulting in fertile soil that provides foods. Like herbivorous and predators, decomposers are heterotrophic, meaning that they use organic substances to get their energy, carbon and nutrients for growth and development. These microbes break down of three biomass constituents i.e. cellulose, hemicellulose and lignin.