What is the optimal fluoride concentration in community water supplies?
A) 1 ppm
B) 2 ppm
C) 2.5 ppm
D) 4 ppm
Correct Answer:
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A)hypertension.
B)hyperglycemia.
C)enlargement of the
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A)lignan.
B)carotenoid.
C)phytoestrogen.
D)enzyme cofactor.
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