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 September 19, 2017, from http://learn.genetics.utah.edu/content/selection/time/
Geologic Time [Internet]. Salt Lake City (UT): Genetic Science Learning Center; 2013 [cited 2017 Sep 19] Available from http://learn.genetics.utah.edu/content/selection/time/
Genetic Science Learning Center. "Geologic Time." Learn.Genetics. July 1, 2013. Accessed September 19, 2017. http://learn.genetics.utah.edu/content/selection/time/.