Based on the information in The Miller-Urey Experiment reading passage above, which of the following statements is most accurate? The Miller-Urey experiment proved that a primitive Earth consisted of water, methane, ammonia and hydrogen. The Miller-Urey experiment proved that amino acids are derived from simple organic molecules. The Miller-Urey experiment provided evidence that Alexander Oparin's and J. B. S. Haldane's hypothesis that conditions on the primitive Earth favored chemical reactions that synthesized more complex organic compounds from simpler organic precursors was incorrect. The Miller-Urey experiment provided evidence that simple organic molecules found on a primitive Earth could be converted into longer and more complex molecules, given the right set of conditions.