The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The Secondary Mirror Does Not Create a Hole in the Image
The Chain of Survival.
The electron transport chain.
Upper-Level Maps
Food Additives Can Help Keep Your Foods Safe and Healthy