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Author Question: Frequency modulation uses two loudness levels. Indicate whether the statement is true or ... (Read 28 times) |
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.
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.
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Cyanide works by making the human body unable to use oxygen.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.