More info about evolution: http://www.nearctica.com/evolve/evolve.htm

A text summary of the clickable map above, meant for web-crawlers and other automatic tools:
evolution occurs at site population
evolution determined in part by environment
evolution produced by natural selection
evolution produced by genetic drift
evolution produced by mass extinction
evolution has definition change in gene pool over time
evolution has definition change in heritable traits over
evolution has definition time