1. use model 1 to show which atoms are present in each type of molecule by listing the symbol for each atom included. carbohydrate has been done for you. a. carbohydrate— c, h, o c. amino acid—b. lipid— d. nucleic acid—

Amino acids C, H, O, and N

Lipids C,H,O, and also N and P

Nucleic acids C,H,O,N and P

Explanation:

a "theory" a suggestion that is not 100 % accurate, or a figure. some people say its a theory because they of all the passed theory's about one subject. it depends sometimes theory might be accurate and sometimes they are.