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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.
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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
![Acromegaly. Acromegaly is a metabolic disorder in which excessive amounts of growth hormone are secr](https://biology-forums.com/gallery/47/medium_14755_14_10_12_6_35_05_93811190.jpeg)
![Common skin signs are often evidence of an illness or disorder. A papule is a solid, circumscribed, ...](https://biology-forums.com/gallery/47/medium_665046_01_03_17_6_26_24_26134728.jpeg)