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Author Question: In the 1920s, the development of practical radio communication was furthered by A. its ability to ... (Read 196 times) |
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
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The average office desk has 400 times more bacteria on it than a toilet.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.