Which of the following statements about physical activity in adolescence is true?
A) By age 15, about two-thirds of U.S. teenagers meet the government recommendations for daily physical activity.
B) In the United States today, approximately 50 percent of all high school students take a daily physical education class.
C) In U.S. middle and high schools, more girls than boys enroll in physical education classes.
D) Physical activity among U.S. adolescents declines dramatically with age.
D
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Jessie was diagnosed with failure to thrive (FTT) at 20 months of age. At age 8, we would expect to find that Jessie
a. shows no effects of her earlier FTT. b. is now is taller and weighs more than her peers. c. may have a protein deficiency. d. is smaller, less cognitively advanced, and more emotionally disturbed than typical children.
Rebecca tells Tom that he is singing "off pitch.". Rebecca is referring to which physical property of sound?
a. Amplitude b. Frequency c. Loudness d. Speed e. Decibel
The bacterium Lactobacillus tends to be: a. higher in humans who consume high-fat diets and are obese
b. higher in humans who consume high-fat diets but are of normal weight. c. lower in humans who consume high-fat diets and are obese. d. lower in humans who consume high-fat diets but are of normal weight.
From 1900 to 2007 in the United States, overall death rates dropped from 17.2 deaths per 1,000 to
a. 15.5 per 1,000 b. 9.2 per 1,000 c. 8.0 per 1,000 d. 6.5 per 1,000 e. 5.9 per 1,000