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Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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There are approximately 3 million unintended pregnancies in the United States each year.