Question

Sol.(a) [Key Concept: Miller–Urey Experiment — Abiotic Synthesis of Organic Molecules] In 1953, Stanley Miller and Harold Urey created in the laboratory conditions comparable to those of early Earth (with water vapour, hydrogen, methane, and ammonia). The Miller-Urey apparatus produced a variety of amino acids and other organic compounds found in living organisms today, showing that simple organic molecules can form spontaneously under early Earth conditions.