/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: RuoxiWang https://public.slidesharecdn.com/v2/images/profile-picture.png The law of constant extinction says that "The probability of extinction for a species is not dependent upon how long it has already existed。" The red queen hypothesis says that "It takes all the running you can do to keep in the same place." So sad.