Which of the following minerals is naturally present in some well waters and is added to 70% of all municipal water supplies in the United States?
A) iron
B) calcium
C) zinc
D) sodium
E) fluoride
Correct Answer:
Verified
Q21: People of all ages need fluoride for
Q23: What percentage of the total water supply
Q24: Water intoxication is rare.
Q26: The coffee or tea you consume counts
Q28: People who are dehydrated may have an
Q29: Less than 5% of the total water
Q31: Spring water is taken from _.
A) freshwater
Q36: A water deficit of 20% can be
Q37: Most bottled water is fluoridated.
Q37: Which authority is responsible for the safety
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