This is known because the earliest sedimentary rocks have been dated to that time period. Miller and Urey were two scientists who attempted to explain the origin of life on Earth without referring to any supernatural events. They performed an experiment that suggests how the Earth's atmosphere might have formed. Miller mixed "atmospheric" gases (hydrogen, methane, ammonia, and water vapor) in a sterile glass container and charged them with energy by adding electric sparks to them. The electric sparks resembled lightning at the time of the Earth's formation. After about a week, the mixture turned brown and was found to contain amino acids. This organic compound produced in this experiment was efficient in knowing how the Earth's early atmosphere formed. That is because it was successful in producing some of the building blocks of nucleic acids under geologically relevant conditions. A question that puzzled scientists was how could all this have started in the first place. It is noted that amino acids and nucleic acids stick to the structures of clay crystals. By being held together in a regular pattern on clay crystals, these molecules combine to form proteins and polynucleotides. Other researchers not that some kinds of RNA can join amino acids into protein chains without help from protein enzymes. Some forms of RNA can copy themselves and can actually edit other RNAs by adding and deleting nucleotides. These experiments support another hypothesis that RNA, rather than DNA, functioned as life's first information storage system. According to this hypothesis, life based on RNA have started when RNA fragments began to copy and edit themselves and assemble proteins. As time passed, these RNAs could have evolved to the point where they produced protein enzymes that took over the work of bringing about chemical reactions. Later, storing genetic information could have similarly been passed on to DNA.
What is evolution? ... Evolution also has two subunits which can be divided into micro evolution and macro evolution. The kind of evolution documented above is micro evolution. ... I think the difference between the two is senseless because macro evolution is cumulative micro evolution. ... The word evolution has many different meanings. ...
Evolution The origins of mankind is an extremely controversial issue within today's society. ... One such argument is the conflict involving the theory of evolution versus the theory of creation. After extensive scientific research, it is apparent that the theory of evolution is correct. ... Similarities in these categories link species together and are therefore studied to support evolutionism. ... Darwin proposed that evolution occurred as the result of natural selection. ...
Evolution Evolution is the change that species undergo over time. ... Evolution can be found in fossil records and chemical and structural similarities. ... Probably the most popular evidence for evolution is the numerous fossils found over time. ... Therefore, evolution will have occurred. ... The most popular piece of evidence for evolution are the fossil records. ...
Discussion Assignment # 2, Topic 2 Conflicts between scientists and nonscientist's beliefs of evolution are nothing new to the scientific community. Scientists spend years solely on the research of evolution theories to provide evidence for evolution. This enables them to present facts and defend evolution as a truth. However, showing clear-cut evidence to a nonscientist that evolution exists still presents a major problem. ... Archeological fossils have been found that creates some evidence that points to more or less evolution. ...
Today's human being is the product of millions of years of trial and error through the process of evolution. Charles Darwin was the first to bring fourth the idea of evolution. ... Evolution is the most logical explanation for mans place on earth. ... Almost all scientists believe in some sort of evolution, though they may not agree on all the details they all agree that evolution is the reason for mans place on earth. ... Even with all the proof pointing towards evolution the majority of the world still believes in spontaneous creation by God. ...
The Theory of Evolution The theory of evolution creates tremendous controversy in today's society. Anything as controversial as the creation/evolution debate is bound to generate a diversity of opinions. ... I believe the theory of evolution should be banned from educational courses because of religious conflict. ... Much evidence can be provided against the theory of evolution. ... Evolution supports the idea that humans and apes evolved from a single common ancestor. ...
Creationists say that the evolution theory is biased and incomplete. ... The process of evolution, which all living things developed from unicellular organisms, over billions of years Exactly how evolution occurs is still debated but it is a scientific fact that it does occur. ... Evolution apparently has no built-in direction or purpose. ... It is clear that evolution is much clearer to understand and accept than the creationism theory. There will always be people who will still be curious as to how we appeared on the earth, and some people will oppose the evolution theory, therefore, the evo...
Theory of Evolution Today's human being is the product of millions of years of trial and error through the process of evolution. Charles Darwin was the first to bring fourth the idea of evolution. ... Evolution is the most logical explanation for mans place on earth. ... Almost all scientists believe in some sort of evolution, though they may not agree on all the details they all agree that evolution is the reason for mans place on earth. ... Even with all the proof pointing towards evolution the majority of the world still believes in spontaneous creation by God. ...
Today's human being is the product of millions of years of trial and error through the process of evolution. Charles Darwin was the first to bring fourth the idea of evolution. ... Evolution is the most logical explanation for mans place on earth. ... Almost all scientists believe in some sort of evolution, though they may not agree on all the details they all agree that evolution is the reason for mans place on earth. ... Even with all the proof pointing towards evolution the majority of the world still believes in spontaneous creation by God. ...
Theory of Evolution Today's human being is the product of millions of years of trial and error through the process of evolution. Charles Darwin was the first to bring fourth the idea of evolution. ... Evolution is the most logical explanation for mans place on earth. ... Theory of Evolution Today's human being is the product of millions of years of trial and error through the process of evolution. ... Evolution is! ...
