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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There are approximately 3 million unintended pregnancies in the United States each year.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
True Forget-Me-Not
True Friendship
Adapoids and omomyoids had longer snouts and are the first “true” primates.