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Did you know?
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Excessive alcohol use costs the country approximately $235 billion every year.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
![Relationship between fruit radius and beak length in populations of native and introduced species of](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_19_16231398.jpeg)
![The yellow-winged darter, Sympetrum flaveolum, is a dragonfly found in Europe and mid and Northern C](https://biology-forums.com/gallery/47/medium_12359_26_04_12_4_58_19.jpeg)