The protein that helps to make the skin of a vertebrate tougher and more waterproof is called keratin. Keratin is also the primary structural component of nails and hair.
keratin
Keratin
Keratin is the protein in the epidermis that helps protect the skin and underlying tissue. Keratin is strong and waterproof.
Nails are made of up the protein called keratin, which is a tough and insoluble structual protein. It is basically dead skin cells.
Protein helps muscle development.
Helps with your balance and stamina and they are waterproof. !!
That would be an opinion. However, Marine training "is tougher" in some ways, such as swimming, but the Army training is tougher in other ways, too. Hope this helps :D
An oily secretion that helps to waterproof body surface is known as sebum. This is usually secreted in the outermost layer of the skin which is known as the epidermis.
Sebum
No, protein helps give you energy. Vitamin D helps absorb calcium
protein helps the foetus to develop by the
Carrier Protein