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Author Question: The sign on the bus says, Am I driving courteously? If not, call 1-800- BUSRIDE.. What function does ... (Read 44 times) |
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.
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
If you could remove all of your skin, it would weigh up to 5 pounds.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.