The blood exchanges oxygen and carbon dioxide in the:
a. heart
b. liver.
c. digestive system.
d. lungs.
e. mouth.
d
Nutritional Science
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As of 2011, approximately how many people in the U.S. were living with HIV infection?
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Which of the following substances is a major mineral?
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A buffer:
a. emulsifies fats. b. maintains a constant pH. c. facilitates chemical reactions. d. protects against plaque build-up.
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Young children can receive food benefits from the WIC program until they are ________ years old
A) 8 B) 7 C) 5 D) 6
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