Based on extremeophiles, life was created to be tenacious, pop up everywhere, to be sure evolution of life survived to create us. -A tough extremophile bacteria has been found in Mono Lake, living with high concentrations of arsenic. Once started, living matter is extremely tough, and ery adaptable.:-http://www.the-scientist.com/news/display/57851/-A more theologic discussion of the arsenic bug and what it means in a duscussion of purpose in evolution;-http://procrustes.blogtownhall.com/2010/12/02/alien_life.thtml