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Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
Did you know?
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
![California ground squirrel (Spermophilus beecheyi) in the man-made rocky shoreline of the Berkeley M](https://biology-forums.com/gallery/47/medium_27692_23_04_12_3_42_52.jpeg)
![The Movius line separates regions of the world where Acheulean hand axes were made from regions wher](https://biology-forums.com/gallery/47/medium_275510_22_02_15_5_56_55_207692261.jpeg)
![Emanuel Leutze’s Washington Crossing the Delaware (1851) is riddled with historical inaccuracies, mo](https://biology-forums.com/gallery/47/medium_374628_16_08_15_9_46_08_22243215.jpeg)