Which ultratrace element was used as a preservative for meat,fish,and dairy products in the early 1900s,considered dangerous for humans in the 1920s,and today,is considered beneficial for humans?
A) cobalt
B) arsenic
C) boron
D) vanadium
Correct Answer:
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A)whole
Q2: Which categories of food provide the most
Q4: Which ultratrace element effects the composition,structure,and strength
Q5: Which element is second only to oxygen
Q6: Which of the following groups of foods
Q7: In animals,a deficiency of which element is
Q8: Which of the following interacts with fluoride
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A)sodium
B)chloride
C)iodine
D)iron
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