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Author Question: The appearance of a downdraft marks the end of the mature stage of a thunderstorm. a. true b. ... (Read 54 times) |
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
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The horizontal fraction bar was introduced by the Arabs.
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The human body produces and destroys 15 million blood cells every second.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.