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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

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Colchicine is a highly poisonous alkaloid originally extracted from a type of saffron plant that is used mainly to treat gout.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

A fossil leaf in low-grade coal A fossil leaf in low-grade coal
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Another question for grade 11 math Another question for grade 11 math
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Video: Hormonal regulation of pregnancy - weeks 17 through 38

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