a bacterium is a kind of decomposer
anaerobic_bacterium is bacterium. bacteria is microorganism. bacterial_agent is bacterium. bacteria is bacteria. polysaccharide_encapsulated_bacterium is bacterium. aerobic_bacterium is not bacterium. thermophilic_bacterium is bacterium. biological_decomposition is decomposing. fibrobacteres is bacterium. aerobic_bacterium is bacterium.