« previous next »
« previous next »
 

Did you know?

More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.

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?

Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

Plants responded by non-uniform root growth. Plants responded by non-uniform root growth.
Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp Cardiac catheterization. Insertion of a tube called a catheter through a blood vessel. In this examp
How to shift and reflect a square root function using transformations How to shift and reflect a square root function using transformations
Comparing root systems Comparing root systems
Primary growth in a root Primary growth in a root
Primary growth in a root Primary growth in a root
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library