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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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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.