Bacteria early species 243

However, adipocere formation is not an end product, and eventually adipocere will also decompose. The factors necessary for decomposition of adipocere are not well documented. Similar to its formation, the decomposition of adipocere appears to be dependent on the surrounding burial environment (Fiedler et al. 2004). Early studies reported that an aerobic environment was necessary to decay adipocere, suggesting that adipocere would only decompose when a grave site was exposed to air or when an adipocerous body was exhumed to the soil surface (Evans 1963 Mant 1957, 1987). More recent studies suggest that the persistence of adipocere in a burial environment is related to the exclusion of gram positive bacteria, including species of Bacillus, Cellulomonas, and Nocardia, which are able to decompose adipocere (Pfeiffer et al. 1998). 

Millions of species of micro-organisms have been discovered since the early pioneers of microbiology started to give them names and many thousands of different bacteria, moulds and yeasts have been found in a wide range of industrial water based products. 

Finding the root of the tree is hard, especially as we do not know the sequence of the RNA from the common ancestor. However, there are sequences that are propagated similarly in early organisms and show us which species are closest to the common ancestor. The first major divergence was between the bacteria and the archaea but no living species is close to the root, implying that all life has evolved significantly from the common ancestor. However, all species closest to... 

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