The hair, skin, and nails are part of the integumentary system. This system grows from biotin.
Answer: D) Integumentary
no one like Jesus
4.a
5.d
those are the only ones i'm 100% sure about.
Answer:
tell me the question I may answer it
Surgical scalpel is re useable because it can be easily sanitized
<span>Hydrogenation process I think but I'm not exactly sure.</span>