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Author Question: In a contest, two tractors pull two identical blocks of stone the same distance over identical ... (Read 2503 times) |
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.
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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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There are more nerve cells in one human brain than there are stars in the Milky Way.