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Author Question: The percentage (by mass) of the Sun that is Hydrogen is about: A) 91. B) 71. C) 27. D) 9. E) ... (Read 60 times) |
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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There are 20 feet of blood vessels in each square inch of human skin.
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According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.
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In 1864, the first barbiturate (barbituric acid) was synthesized.