making them more able to survive - and evolve - as the environment changes. An example of that adaptation would be the way human beings have evolved to be taller or to walk upright. Another example would be that smaller animals considered as food by larger animals, have evolved to run faster than their predators-Survival of the fittest Symbiosis is a theory that may prove this incorrect.......
Others developed this idea into evolution. but the two are distinct as one relies on a variety of forms being present in the beginning and the other says "a " form changed over time from something to something else, like from a lizard into a bird!!!.
