The number of 4- to 17-year old children whose parent's report that their child has been diagnosed with ADHD is increasing by approximately _____ percent per year
a. 3
b. 5
c. 7
d. 9
e. 11
b
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All of the following are correct about alcoholism except:
A) risks of developing alcoholism may be increased by high levels of stress. B) it tends to run in families, indicating there is a genetic component to the disease. C) its development is influenced by environmental factors. D) the older a person is when alcohol consumption begins, the greater the likelihood that a drinking problem will eventually develop. E) individuals who begin drinking before the age of 15 are four times more likely to become alcohol dependent than those who do not drink before the age of 21.
Approximately how many people in the United States are afflicted with low bone mass?
a. 500,000 b. 5 million c. 44 million d. 74 million
Long-term effects of irrigation include: a. development of chemical-resistant pests. b. raising of the water table
c. more rapid plant growth. d. increased saltiness of the soil. e. richer and damper soil.
Worldwide, one person in every ________ experiences persistent hunger.
a. 4 b. 9 c. 12 d. 16 e. 20