It would be the pubis bone.
Enzymes are made of strings of amino acids chemically bonded to one another. These bonds give each enzyme a unique structure, which determines its function. They mostly break down carbohydrates and fats. Once a protein source reaches your stomach, hydrochloric acid and enzymes called proteases break it down into smaller chains of amino acids. Amino acids are joined together by peptides, which are broken by proteases.
I believe the correct answer is DDT.
It kills mosquitoes but thins the eggs of birds.
Hope this helps.
Showing the strength of the bones and the muscles and bones around it.