« previous next »
« previous next »
 

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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?

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.

Living in groups and the many eyes hypothesis. Living in groups and the many eyes hypothesis.
Chimpanzees live in complex kin groups in which lifelong bonds and individual personalities play key Chimpanzees live in complex kin groups in which lifelong bonds and individual personalities play key
Respiratory Rate Ranges of Various Age Groups Respiratory Rate Ranges of Various Age Groups
Social Groups Social Groups
As with other groups, there is no such thing as the Latino family. Some Latino families speak little ... As with other groups, there is no such thing as the Latino family. Some Latino families speak little ...
The Central Nervous System Includes the Brain and Spinal Cord The Central Nervous System Includes the Brain and Spinal Cord
Video: How proteins function? How do proteins work?

For a complete list of videos, visit our video library