Is it true that air enters through the nose or mouth and passes into the trachea

How much serem is need to make kids?

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

Saved if you often notice flakes of dead skin on your shirt, you may have dandruff. if so,