Oparin and Haldane believed in the chemical evolution of life. They proposed that the First form of life could have come from pre - existing non-organic molecules, S.L. Miller created electric discharge in a closed flask containing CH4, H2, NH3. and water vapour at 800o C, thus creating the condition of early earth with reducing environment, high energy radiation and high temperature. This resulted is the formation of amino acids. Miller's experiment thus supports the chemical evolution of organic molecules from the inorganic ones-a condition being the basis requirement conducive to the formation of early life.
