Explanation

SW Fox of the university of Miami had demonstrated that if a nearly dry mixture of amino acids was heated, polypeptide molecules were synthesized. Similarly, simple sugars could form polysaccharides and fatty acids could combine to produce fats. Amino acids could form proteins. Thus, the small simple organic molecules combined to form large complex organic molecules, $e.g.,$ fatty acids and glycerol united to form fats, sugars, nitrogenous bases, and phosphates combined into nucleotides which polymerized into nucleic acids in the ancient oceans