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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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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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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.