Uray and Miller test

The reading passage describes an exciting experiment by Miller and Uray, which tried to recreate the early Earth condition. They aimed to find out how organic life started on our planet. Their experiment resulted in the " primordial soup" theory, which explained how the initial elements of life had been created out of simple inorganic materials, such as ammonia, methane, and hydrogen. However, the lecturing professor indicates some recent skepticism about Uray and Miller's conclusion. According to the professor, the first flaw about their trial is that they introduced continuous electrical shocks to their liquid mixture. Although the primary Earth atmosphere produced huge thunderstorms and electrical discharges, they were not continuous. This may undermine their results and cast doubt on the possibility of the significant amount of amino acids they produced in the flask. Another problem with the primordial soup test is that the reaction consumed the oxygen content of the experimental environment. The professor highlights that the oxygen-related reactions may not be possible on the early earth, since the oxygen was not as abundant as today. Finally, the professor mentions that frequent meteorite showers in the early time could have been a significant source of organic materials, as those molecules can endure the harsh condition of outer space. Therefore, the meteorites could have inoculated amino acids to the earth's surface.