Natural selection, in biology, is the process by which environmental effects lead to varying degrees of reproductive success among individuals of a population of organisms with different hereditary characters, or traits, as defined by Microsoft Encarta Encyclopedia. For billions of years, natural selection has been taking place and changing life on this planet. Survival of the fittest is a term used to describe how and why natural selection occurs. An organism better equipped to survive in a specific environment will survive longer and have a greater chance of producing offspring than an organism that does not have favorable traits. Charles Darwin and Alfred Wallace first proposed this concept in 1858. Although there are many arguments against the theory of evolution and natural selection, evidence of this process can be seen in several animals including peppered moths and the finches Darwin observed early in his studies. .
About 3.5 billion years ago the earth's environment was very different than it is today. There was not a significant amount of free oxygen in the atmosphere. According ("Evolution," Microsoft ® Encarta ® Encyclopedia 99. © 1993-1998 Microsoft Corporation) experiments have shown that complicated organic molecules, including amino acids, can occur spontaneously under certain conditions believed to simulate the earth's primitive environment. Other experiments indicate that concentration of organic molecules may have led to the synthesis of complex molecules, such as proteins, nucleic acids, and carbohydrates, and eventually to interactions among these molecules. A basic genetic system was developed and elaborated by natural selection into the more complex genetic system of today. Scientists believe that the early organisms fed on inorganic or organic molecules dissolved in the waters of the earth. Later, evolution led to organisms that used chemical and solar energy sources to produce organic molecules.
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! ...
