Carbon dioxide diffuses out of the tissues and into the blood, where it is dissolved in the plasma. While some of the carbon dioxide remains dissolved in the plasma, most carbon dioxide diffuses into our red blood cells.
A screencast is a digital movie in which the setting is partly or wholly a computer screen, and in which audio narration describes the on-screen action. It's not a new idea.
CamStudio is a great tool to create quick demos and screencasts on your computer in AVI and, if you wish, you can convert them into Flash format. CamStudio's features include options to highlight the cursor path during a recording session, automatic panning, and the ability to record with sound.