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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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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 horizontal fraction bar was introduced by the Arabs.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.