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Did you know?

There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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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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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.

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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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On average, the stomach produces 2 L of hydrochloric acid per day.

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