Studies have shown that UV radiation rapidly depletes ______, ...

[plus1]

Studies have shown that UV radiation rapidly depletes ______, which plays a crucial role in neural tube development of the embryo.
 
  a. melanin
  b. melanocytes
  c. carotene
  d. folate
  e. omega 3

Question 2

Rickets is caused by
 
  a. overexposure to ultraviolet radiation.
  b. too much vitamin D.
  c. an insufficient amount of melanin.
  d. too few melanocytes.
  e. insufficient amount of vitamin D.

[Brummell1998]

Answer to Question 1

D

Answer to Question 2

E

[plus1]

Thanks for the timely response, appreciate it

[coreycathey]

Excellent