In the section "Investigating Life: Vitamins and the Evolution of Human Skin Pigmentation",which of the following is true of vitamin D and folic acid for a human?
A) They cannot be synthesized enough to meet a person's demand.
B) They cannot be synthesized at all by the human body.
C) All of the choices are correct.
D) They are both used to regulate calcium uptake by the bone.
E) Enough can be synthesized by the body to meet a person's demand.
Correct Answer:
Verified
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