Hair is produced at the base of hair follicles from columns of cells that die when they are filled with keratin.

true or false?

which of the following is not made up of keratin?
a.

fingernails

c.

sweat glands
b.

hair

d.

epidermis

16 select the correct answer from each drop-down menu. sharks, whales, and dolphins share similar features such as body shape and the position of fins. hoy while whales and dolphins have lungs. these differences indicate that the organisms share a comme whales also possess a vestigial pelvic bone. the presence of the pelvis bone may indicate that whales reset next