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Author Question: Mr. Shaffer is a high school history teacher. He is very concerned about Rafael, one of his ... (Read 11 times) |
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.