What joins amino acids to make proteins?

Peptide bonds

Explanation: A peptide bond is a bond in which two amino acid molecules are covalently joined together. The reaction involves the removal of water molecule from alpha carboxyl group of one amino acid and alpha amino group of another amino acid to form a peptide bond. When many amino acids are joined by peptide bond, the product is a polypeptide or protein.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.