|
|
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.
Everyone has one nostril that is larger than the other.
Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
![The physician will begin visual inspection of the patient immediately upon entering the examination ...](https://biology-forums.com/gallery/47/medium_665046_07_03_17_8_37_50_26452943.jpeg)
![A factory replacement unit for a CSFI unit that has individual injectors at the ends that go into ...](https://biology-forums.com/gallery/30/medium_548020_30_05_17_11_26_29_300131193.png)