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Author Question: According to the text, Americans are ____ richer than they were 50 years ago. At the same time, ... (Read 44 times) |
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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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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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
Earth’s history spans 4.5 billion years. Geologists and paleontologists have pieced together the his
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim