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Stanley Miller and Harold C Urey perform...

Stanley Miller and Harold C Urey performed an experiment by recreating in the laboratory the probable condition of the atmosphere of the primitive earth.
i. What was the purpose of the experiment?
ii. In what forms was the energy supplied for the chemical reactions to occur?

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i. Stanley Miller gave experiment based on theory of origin of life on earth.
ii. In primitive times at the time of formation of earth there was a nonoxygenated atmosphere of `CH_(4), NH_(3), CO_(2), CO, NO_(2), H_(2)O`(water vapours) etc. Due to cooling and compression caused by increased pressure, the chemicals reacted, compressed against each other and cooled (liquefied) to form the first life on earth in water.
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