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Several studies find that among college students, use of illegal drugs is negatively correlated with grade-point average. Which conclusion, if any, do these results justify?
Bulimia
An eating disorder marked by binge eating followed by methods to avoid weight gain, such as vomiting, fasting, or excessive exercise.
Amenorrhea
The absence of menstruation - one or more missed menstrual periods.
Tooth Enamel
The hard, outer surface layer of teeth that protects against decay, temperature extremes, and chemicals, making it the hardest tissue in the body.
Attention Deficit Hyperactive Disorder
A neurodevelopmental disorder characterized by problems with focus, hyperactivity, and impulsiveness.
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