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Author Question: By 1500, poor city-dwellers constituted ____ percent of the urban population. a. 10-15 b. 20 c. ... (Read 33 times) |
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.
Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.