|
|
There are approximately 3 million unintended pregnancies in the United States each year.
During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
![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)
![Because of immature visual-motor coordination, young children find it hard to throw and catch small ...](https://biology-forums.com/gallery/47/medium_667187_21_02_17_5_23_15_255992418.png)