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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).
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.
There are more bacteria in your mouth than there are people in the world.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
![Simple food web of an Arctic island. NOTE: The indication of detritivores and pathogens was not part](https://biology-forums.com/gallery/47/medium_33_17_02_12_5_42_58_20001060.jpeg)
![Abduction and Adduction Abduction–Moving a body part away from the middle. Adduction–Moving a body p](https://biology-forums.com/gallery/47/medium_14755_24_09_12_7_37_45_89521021.jpeg)