Darwin’s theory of evolution by natural selection
(1)That biological types or species do not have a fixed, static existence but exist in permanent states of change and flux;
(2) All life, biologically considered, takes the form of a struggle to exist – more exactly, to exist and produce the greatest number of offspring.
(3) That this struggle for existence culls out those organisms less well adapted to any particular ecology and allows those better adapted to flourish – a process called Natural Selection
(4) That the genetic variations ultimately producing increased survivability are random and not caused by God or by the organism’s own striving for perfection.
(5) That natural selection is cumulative, thus evolution requires enormously long periods of time, so long, in fact, that the everyday experience of human beings provides them with no ability to interpret such histories;