|
|
Your heart beats over 36 million times a year.
The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.
Blood is approximately twice as thick as water because of the cells and other components found in it.
GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
![Comparison of small subunit rRNA gene sequences of vertebrate, invertebrate chordate, and invertebra](https://biology-forums.com/gallery/47/medium_33_23_07_11_3_51_51.jpeg)
![A strike by 800 women shoemakers in Lynn, Massachusetts, in 1860. In 1851 a Lynn shoemaker had adapt](https://biology-forums.com/gallery/47/medium_375552_19_08_15_9_09_53_223271453.jpeg)