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Author Question: The critical angle for a substance in air is measured at 53.7. If light enters this substance from ... (Read 54 times) |
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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There are approximately 3 million unintended pregnancies in the United States each year.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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Asthma cases in Americans are about 75% higher today than they were in 1980.