Which of the following is the primary mineral in the hydroxyapatite crystals that provide strength and structure to bones and enamel on teeth?
a. Chloride
b. Sodium
c. Calcium
d. Fluoride
Ans: c. Calcium
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a. true b. false
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Sara is a 16-year-old high school student. She often looks at herself in the mirror, and she perceives herself to be fat even though she is extremely thin and weighs only 77 lbs. She has restricted her diet and drinks only orange juice for breakfast, skips lunch at school, and eats an apple for dinner. If Sara visits a health practitioner, she is likely to be diagnosed with _____
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