Final answer:
The non-living synthesis of simple organic molecules was demonstrated by the Miller-Urey experiment, in which electrical sparks were passed through a mixture of gases to simulate conditions of Early Earth's atmosphere and amino acids were formed.
Step-by-step explanation:
The non-living synthesis of simple organic molecules was demonstrated by the Miller-Urey experiment. In this experiment, Stanley Miller and Harold Urey simulated the conditions of early Earth's atmosphere by passing electrical sparks through a mixture of gases believed to be present at that time. The experiment resulted in the formation of amino acids, the building blocks of proteins, showing that organic molecules could be formed abiotically.