ection variations occur spontaneously, without rhyme or reason. Darwin describes this idea during his discussion in his first paragraph. He states, "Can it, then, be thought improbable, seeing that variations useful to man have undoubtedly occurred ... should sometimes occur in the course of thousands of years" *(Jacobus, 2002, pg 438). This describes any variation that occurs overtime and for no apparent reason. Unfortunately, he was not describing genetic variations that occur due to exposure to chemicals or toxins that can have this affect upon cells. Today, these types of variations are occurring at an alarming rate, but for a known reason – carcinogenic agents.
             The second assumption is that of the environment having a direct effect upon the survival of the species. He postulated that those that do not adapt to environmental variatio
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