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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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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.
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In 1864, the first barbiturate (barbituric acid) was synthesized.