Biology
AIDS is caused by the Human Immunodeficiency Virus (HIV). The transmission of HIV infection generally occurs through

Shaking hand with infected person
Transfusion of contaminated blood and blood products
Eating contaminated food and water
Inhaling polluted air

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Biology
Which statement concerning the diagnosis of ADHD is true?

Racial minority status is a good predictor of being diagnosed with ADHD
About 20 percent of school-age children are diagnosed with ADHD
Most children "outgrow" symptoms of ADHD
Boys are more likely to be diagnosed with ADHD than girls

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