Which of the following is an example of oxidation? a: when a pond freezes over. b: when cocoa mix dissolves in milk. c: when rust forms on a nail d: when heat and light is given off a burning log.

#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.