Which of the following observations is an example of a positive correlation?
A. When a population consumes fewer fruits and vegetables, the percentage of people in that population with scurvy increases.
B. When teenagers decrease their usual intake of sugar-sweetened beverages, their body fat level declines.
C. When teenage girls decrease their intake of iron-rich foods, the percentage of the girls who have iron-deficiency increases.
D. When older adults increase their daily intake of vitamin D, the percentage of the adults that develops infections decreases.
Answer: B
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The thickness of a liquid is known as its:
A. osmolality B. viscosity C. nutrient density D. osmolarity E. coagulation
Simple carbohydrates differ from complex carbohydrates by virtue of:
a. the type of bonds joining them. b. the number of molecules they are made up of. c. their digestability. d. the type of atoms they are composed of.
Substances contained in food that are necessary for good health are called ________
A) herbs B) nutrients C) preservatives D) by-products
How might supplemental vitamin E adversely affect physically active people?
What will be an ideal response?