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Did you know?
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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