Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Everyone has one nostril that is larger than the other.
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The average office desk has 400 times more bacteria on it than a toilet.
Typical Caffeine Content of Chocolate and Several Beverages
A typical oil pump mounted in the front cover of the engine that is driven by the crankshaft.
Cutaway view of a typical alternator.
A cutaway view of a typical two-stage turbine electric fuel pump.