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Author Question: _______ is spread by the bite of a flea or tick infected with the organism; by contact with an ... (Read 29 times) |
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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 more bacteria in your mouth than there are people in the world.
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The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
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The average adult has about 21 square feet of skin.
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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.