Final answer:
Laboratory experiments using Archean atmosphere gases plus lightning formed amino acids. These experiments provided support for the theory of abiotic synthesis of organic compounds.
Step-by-step explanation:
Laboratory experiments using Archean atmosphere gases plus lightning formed amino acids. Urey and Miller proposed a theory in which electric sparks catalyzed reactions and resulted in amino acid formation. This experiment provided additional support for the theory of abiotic synthesis of organic compounds under conditions similar to those of early Earth. It is important to note that while these experiments produced promising results, the early atmosphere of Earth may not have had an abundance of reducing gases like those used in the Urey and Miller experiments.