Decomposition is the common procedure of dead animals or plant tissue being decayed or separated. This procedure is done by microscopic organisms. decomposition is the basic phase of all life cycles on earth. To empower development of youthful plants and creatures, more seasoned examples must bite the dust and decay. This restricts the competition for assets and gives a new source of fundamental supplements for new generations of life. This session mainly focuses on environmental preservation and advancements in plant and food decomposition and forensic sciences like forensic entomology, forensic pathology etc. Some of the fungi involves in decomposition are ascomycetes, deuteromycetes and saprophytic basidiomycetes.