Something that prevents injury by forming protective plates is made of what?
Hair Protein Skin mineral Rock iron oxide a metal Keratin
A B C D E F G H
Fingernails are also made of keratin.
Something made of keratin prevents injury by forming protective plates
Something that prevents injury by forming protective plates is made of what? (A) Hair (B) Protein (C) Skin (D) mineral (E) Rock (F) iron oxide (G) a metal (H) Keratin