In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The horizontal fraction bar was introduced by the Arabs.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Wild boar skeleton
shoulder bones
a) Avoid bending your spine from working with the table too low. b) Avoid hiking your shoulders from ...
Always use the viscosity of oil as specified on the oil fill cap.
Gliding Phoenix. Beginning position: Legs straight and together, arms at sides of body. 1. Rise up ...