Variation, Selection, and Time
Scroll through the page below to get an idea of the immensity of geologic time.
Genetic Science Learning Center. (2013, July 1) Geologic Time. Retrieved June 22, 2017, from http://learn.genetics.utah.edu/content/selection/time/
Geologic Time [Internet]. Salt Lake City (UT): Genetic Science Learning Center; 2013 [cited 2017 Jun 22] Available from http://learn.genetics.utah.edu/content/selection/time/
Genetic Science Learning Center. "Geologic Time." Learn.Genetics.July 1, 2013. Accessed June 22, 2017. http://learn.genetics.utah.edu/content/selection/time/.