Question

what is miller and urey experiments ??​

Answer 1

It is an experiment done by the two famous scientists, Stanley.L.Miller and Harold.C.Urey, in 1953. This experiment had proved the theory  stated by J.B.S. Haldane(The Oparin-Haldane Theory), that the first living organisms had arisen from chemical synthesis.

They assembled an atmosphere similar to that thought to exist on early earth [this had molecule like ammonia (NH3), methane (CH4) and hydrogen sulfide, but no oxygen] over water. They maintained the mixture of these gases just below 100°C and passed sparks to stimulate lightning.

At the end of a weak, 15% of the carbon (from methane) had been converted to simple compounds of carbon including amino acids which make up protein molecules.

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Answer 2

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The Miller–Urey experiment was a chemical experiment that simulated the conditions thought at the time to be present on the early Earth and tested the chemical origin of life under those conditions. The experiment at the time supported Alexander Oparin's and J. B. S.