From the 1960s to 2002, the percentage of American children who were overweight
A) doubled.
B) tripled.
C) quadrupled.
D) declined.
C) quadrupled
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"I have lots of motivation to do something. I want to do something with my life, but I'm not sure what." This person shows ____ but lacks ____.
A. intensity towards a goal; direction B. goal-directed behavior; drive reduction C. energized behavior; direction D. instinct; incentive
When Lewis smokes, the nicotine from the cigarettes will affect his brain cells by
a. causing more neurotransmitters to be released. b. prolonging the action of certain neurotransmitters. c. directly stimulating brain cells through the mimicry of specific neurotransmitters in the brain. d. filling receptor sites on brain cells and blocking incoming messages.
In the United States, 15- to 24-year olds constitute only one-fourth of the sexually active population
Indicate whether this statement is true or false.
Infants' early understandings of objects and their principles are known as a naïve theory of physics
Indicate whether the statement is true or false