Evolution Fact and the Origins of Life

Topics: Life, Evolution, Earth Pages: 4 (1345 words) Published: November 26, 2006
Over the past few centuries scientists have been trying to answer the question: what was the origin of life? There have been a number of scientists who have produces a number of plausible theories. The currently most excepted theory is Oparin's theory, which states that the "origin of life on Earth was in nonliving chemical substances which spontaneously formed in Earth's early atmosphere and combined to make more complex chemicals until living cells were formed. " This maybe a possibility because Stanley Miller; a student at University of Chicago, began experimenting to prove Oparin's theory. He created a device that dispersed gas's that were likely to be present in the early atmosphere, and then he "past an electrical discharge, stimulating the UV rays present in the early atmosphere. After allowing the experiment to continue for a week, the results were startling; the previously colorless solution inside the apparatus had become red." After the solution was analyzed, Miller found that most of the organic molecules present could not be readily identified; this in effect proved Oparin's theory that organic compounds could have been created in the early atmosphere. However, there have been other theories that do not support this experiment; is the Cosmozoa theory; which states that life was brought to earth from somewhere else, and the theory of spontaneous generation; which states that life can suddenly and spontaneously appear. Therefore, this essay will discuss the many different perspectives and theories of the origin of life and each of these theories discuss the environmental factors that would affect the possibility of the recurrence of the origin of life due to the different atmosphere during the primeval Earth. Also this essay will discuss the influences of Sydney Fox, and Stanley Miller on the current theories. And the past point of view about evolution will also be covered, and therefore, the basic idea of the current and past models of the...
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