Beginning of Essay
Pd.3 was a man of incomprehensible genius. He proposed theories that changed the views of the origin of mankind, as well as, the beginning of life on earth and the continual evolution of advanced forms of life. Other great scientists such as Galileo and Aristotl ....

Middle of Essay
.... simple cell, emerged about four billion years ago. How can that hypothesis be extended to explain the variety of life forms that exist on earth today? (Question formed by scholars in an attempt to stump Darwin) Darwin in his "Origin of Species" published an answer to this question in 1859. Darwin wrote: "As many more individuals are produced than can possibly survive, there must be in every case, a struggle for existence, either one individual with another of the same species, or with individuals of distinct species, or with physical conditions of life. Can it be thought improbable, seeing that variations useful to man have undoubtedly occurred ....