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.
I use Screencast-o-matic to support my flipped learning instruction in information literacy and research skills by creating video clips that demonstrate research skills, such as searching databases, creating citations/Works Cited pages using NoodleTools, evaluating web pages, etc.