Mass extinction Extinction is a continual product of natural selection. since the dawn of competition spawned by the first meiosis event , natural selection has altered all life on earth, precariously engaging in life experiments some that work and some that don’t. Those experiments that do not work are those who have so far been extinct, and in fact 99%(Kiernan 1996:574) of all species that have ever engaged in the life battle have met their fate …showed first 75 words of 1115 total…

…showed last 75 words of 1115 total…In Magill’s survey of science, edited by L, Hoopes, pp. 2931-22936. Salem press. New Jersey. Freedman, B 1996 Extinction. In The gale encyclopedia of science, edited by B, Travers, pp.1430-1434. Gale research. New York. Hildebrand, A. R., and Boyton, W. V 1991 Cretaceous ground zero. Natural history 46-54. Kiernan, V 1996 Extinctions. In Encyclopedia of life sciences, edited by M, Cavendish , pp. 574-576. New York. Monastersky, R 1996 life’s closest call. Science news 151:74-76. ------------------------------------------------------------------------ **Bibliography**