The goal of analysis into the first evolution of life is to work out the character of the foremost primitive organisms and therefore the surroundings during which they evolved. the chance is taken to research 2 natural repositories of biological process history accessible on Earth: the molecular record in living organisms and therefore the geologic record. These paired records square measure used to: (i) verify once and in what setting life 1st appeared and therefore the characteristics of the primary in living organisms; (ii) perceive the phylogenesis and physiology of microorganisms, together with extremophiles, whose characteristics could replicate the character of primitive environments; (iii) verify the first nature of biological energy transduction, membrane perform, and knowledge process, together with the development of artificial chemical systems to check hypotheses relating to the first nature of key biological processes; iv) investigate the event of key biological processes and their environmental impact; v) examine the response of Earth’s part to extraterrestrial events; vi) investigate the evolution of genes, pathways,