Acidobacteria form a newly devised division of Bacteria. As implied by their name they are acidophilic. Despite having been studied very little, this division is an important contributor to ecosystems, particularly where soil is concerned. In biology, the equivalent of a phylum in the plant or fungi kingdom is called a division. ... Phyla/Divisions Actinobacteria Aquificae Bacteroidetes/Chlorobi Chlamydiae/Verrucomicrobia Chloroflexi Chrysiogenetes Cyanobacteria Deferribacteres Deinococcus-Thermus Dictyoglomi Fibrobacteres/Acidobacteria Firmicutes Fusobacteria Gemmatimonadetes Nitrospirae Omnibacteria Planctomycetes Proteobacteria Spirochaetes Thermodesulfobacteria Thermomicrobia Thermotogae Bacteria (singular, bacterium) are a major group of living organisms. ... Acidophilic describes the tendency of a inorganic particle or organism to acidic conditions or acids. ... In ecology, an ecosystem is a naturally occurring assemblage of organisms (plant, animal and other living organisms—also referred to as a biotic community or biocoenosis) living together with their environment (or biotope), functioning as a loose unit. ... For the heavy metal band see Soil (band) Soil is unconsolidated rock particle that lies on the surface of the earth, supporting the growth of plants, and serving as a habitat for animal life from microorganisms to small animals. ...