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  • 03-04-2017
  • Chemistry
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At least 20 to 30 minutes of sunlight exposure 3 times per week should provide enough vitamin _____.
a. a
b. c
c. d
d. k reset selection

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Adi23
Adi23 Adi23
  • 03-04-2017
Vitamin D
It is provided by sunlight and is absorbed through the skin cells. 
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