|
|
Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Did you know?
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
![Succession in the intertidal zone involves colonization and competition for limited space among spec](https://biology-forums.com/gallery/47/medium_33_17_02_12_6_53_46_2016316.jpeg)
![When the United States gets stuck over a controversial issue—usually something a divided Congress ca](https://biology-forums.com/gallery/47/medium_262797_12_08_15_1_37_16_22180672.png)