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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 the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.