Biology
Compared to land, the open oceans

Are nutrient-poor environments
Contain unlimited nitrogen
Are rich in silica and iron
Are nutrient-rich environments

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Biology
Which statement concerning the diagnosis of ADHD is true?

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

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