No you can’t revert a pastured solid into a liquid
Answer:
Hair and nails are mostly made of protein. Your body uses protein to build and repair tissues. You also use protein to make enzymes, hormones, and other body chemicals. Protein is an important building block of bones, muscles, cartilage, skin, and blood.
Explanation:
I would say the second answers, growth. This is because we need the nutrients and vitamins from food to help us grow, and keep us healthy.