mariesavannah77
mariesavannah77 mariesavannah77
  • 25-04-2018
  • Physics
contestada

Which causes the production of vitamin D in humans?

A. ultraviolet rays
B. radio waves
C. gamma rays
D. X-rays

Respuesta :

cupcake225 cupcake225
  • 25-04-2018
B radio waves is the answer
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gardenslumber gardenslumber
  • 25-04-2018
it's A because there used for tanning
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