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Author Question: Bell Telephone Laboratories invented the ________, which replaced the vacuum tube. (Read 195 times) |
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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.
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The average office desk has 400 times more bacteria on it than a toilet.
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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.