There are creatures originated on this planet when and happen? as a curiosity of human beings for a long time. In ancient times there was the belief that there are beings from God created life, believed to have occurred by nature and change as the creature based on the theory of birth by natural (Spontaneous theory) that the scholars of the era of the previous ideas, Tana (Thales), Ana SI (Anaximader) or American man Aristotle, etc.In a later era The various speakers and more prosperous. Ideas about the origin of life began to change their original ideas and conflicts with — Francesco-Kochi. Regina Diaz (Francisco Redi) Louis p (Louise Pasteur), trial design and create tools and have concluded that life comes from life, it is still not the answer to exactly how life first occurred?The idea in the current era of science is progress more specifically knowledge of Biochemistry and organic chemistry. Ideas about the birth of living organisms and therefore altered and try to prove, is that the creature has a birth, for example.HAL (J.B.S Haldane.) in 1924, mut Manor (R. Bentner) and PA Rin (A.I. oparin), the three people said, likewise, that the creature is composed of organic compounds which have the elements carbon, Chennai call Jane hydrogen and oxygen components are made to believe that the world in raekraya, one of them with reasonable cause that all 4 types together is a laeoklai compound part of living organisms. Later, the c-1 roll ha (Harold C. Urey) u and replace si l Miller (Miller Stanley Lo) 1930 and 1953 has proved that the organic compounds and trials arising from inorganic compounds by ammonia, methane and hydrogen vapor removal combined by using electricity to help make organic protein category.Royal Mail Hotel Kelvin, 1961 (Calvin Mellrin) is Miller trial is similar to replace the map through the gamma rays into. It turns out that several compounds have been found in living organisms and therefore decided that organic substances including organisms may be caused by inorganic substances.Ideas about chemical evolution (chemical evolution) when the Earth began to cool down the surface bundle of various substances and gases group around the world, which consists of surface oxygen. Carbon, hydrogen, nitrogen, and other heavy elements such as iron, Silicon, silver Nickels and aluminum etc, which is the origin of the chemical evolution of the Earth. It is a change that takes millions of years. This is the stage 4 Summary.
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