|
|
Did you know?
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Did you know?
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Did you know?
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
![The anterior pituitary is sometimes called the master gland because it secretes many hormones that r](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_42_27_82371656.jpeg)
![This chart shows the various lines of responsibility and how they differ in presidential and parliam](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_37_18_221851910.png)
![Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s](https://biology-forums.com/gallery/47/medium_374628_15_08_15_11_40_28_222192176.jpeg)