Texas Education Agency
Texas Gateway: Chapter 7: What Causes Changes in Unemployment Over the Long Run
By the end of this section, you will be able to do the following: Explain frictional and structural unemployment; Assess relationships between the natural rate of employment and potential real Gross Domestic Product (GDP), productivity,...
Talk Origins Archive
The Origin of Species, Chapter 14
The entire text of Charles Darwin's book, The Origin of Species is available on this site. This link is specifically for the chapter that discusses embryology as evidence for evolution.