What is 20 times 200000000

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Light waves travel than sound waves.

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.