The theory of Oparin and Haldene on Evolutions states that the life on earth is evolved from pre -existing forms on earth that are basically inorganic molecules. and also this was also preceded by a chemical Evolutions.

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The conditions that are favourable for this or support this procedure is High Temperature, Volcanic eruptions, Acid rains, storms and reduced atmosphere that contains NH3 ,CH4 water vapours etc,

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The Stanley millers experiment supports this theory by following procedure:

1)for proving this theory Miller performed a laboratorical Experiment .

2)He took a Closed flask containing the conditions of nacent Earth.

3)He added NH3, CH4, H2 and water vapoure and created a electric discharge by rods in a temperature of 800 °c

4)After some time he observed that the some complex molecules are been formed and present In that flask.

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