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Author Question: At the turn of the century, there was a large influx of immigrants. A) group B) subculture C) ... (Read 54 times) |
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.