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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.
Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.
![The American Lion was one of the abundant Pleistocene megafauna, a wide variety of very large mammal](https://biology-forums.com/gallery/47/medium_27673_23_04_12_4_30_01.jpeg)
![Sumatran Tiger Fewer than 400, Indonesia and Texas Ocelot Fewer than 250, southern United States, ...](https://biology-forums.com/gallery/28/medium_482573_20_04_17_2_29_16_28053418.png)