Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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A) Butterfly-shaped lupus rash. Lupus is the Latin word for wolf; the face rash was thought to look ...
How to use Cramer's rule to solve a second-order determinant (Question 1)