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Author Question: A weightless astronaut in an orbiting space vehicle is A) shielded from Earth's gravitational ... (Read 68 times) |
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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The longest a person has survived after a heart transplant is 24 years.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
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On average, the stomach produces 2 L of hydrochloric acid per day.