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Author Question: What is the maximum efficiency of a heat engine operating between 293 Kelvins and 273 Kelvins, the ... (Read 68 times) |
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
The longest a person has survived after a heart transplant is 24 years.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.