Author Question: Hair and nails are composed of: A) nonliving keratin. B) melanin. C) collagen. D) ... (Read 182 times)

sc00by25

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Hair and nails are composed of:
 
  A) nonliving keratin. B) melanin. C) collagen. D) keratin.

Question 2

Breast milk production can be maintained by:
 
  A) breast pumping. B) continuous breast feeding.
  C) either A or B. D) neither A nor B.



Pamela.irrgang@yahoo.com

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Answer to Question 1

A

Answer to Question 2

C



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