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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
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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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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%