It is based on evidence found in the world.
Evolutionary theory explains virtually everything about the diversity of life, everything we know about life, of extant forms as well as extinct. As the geneticist Theodosius Dobzhansky wrote: nothing in biology makes sense except in the light of evolution.
It is, but so is gravity. In science, 'theory' means 'idea that has been proven over and over and is generally accepted as truth'. It's a pity it doesn't mean the same in everyday language. ^^
Stellios Giannikopolous
No. Evolution explains how and why organisms change over time. It makes no difference to evolution how organisms are generated.
evolution because it makes the most sense
It is supported by data.
I think the attribution you are looking for is "Darwins' theory of evolution". He wrote several books hypothesizing his theories, the most pertinent to your question being "Origin of Species". You might also want to look up something called the "kalisto effect"... It is a theory based on a similar principal, but in which, occasionally evolution takes makes a giant step and creates a short lived, but particularly efficient abhoritional species
The theory predicts that evolution will happen and in certain ways. The observed evolution makes this prediction correct. It also defines evolution as happening, and as such is perfect evidence in support of it.
There is no theory of creation. The theory of evolution by natural selection explains much about the fact of evolution. The only significance to human society is that some people can not accept the real and modern world because of ideological constraints.
We accept evolutionary science on the evidence presented. No religious ideology can trump the evidence for the fact of evolution and the theory of evolution by natural selection, which explains much of the fact of evolution. I find it passing strange that someone could see a scientific theory as evil since the theory makes no claim on the supernatural. It is up to Muslims what they will accept, but the theory is the bedrock of biology and you cannot do much biology without the theory's overarching explanatory power.
Romance Fiction
Simply put, to understand the unity and diversity of life. " Nothing in biology makes sense except in the light of evolution. "
That is a very hard question to answer as the "Theory of Evolution" is really an umbrella term for several theories based on the fact that allele frequencies of populations change over time, and the assumption that they have done so for the entirety of life on earth, as well as continuing on into the future. Evolution does NOT claim that there is no God. It makes NO STATEMENT whatsoever about spiritual matters. In fact, statistically speaking, the majority of the people who accept evolution are christians. It also does NOT include big-bang cosmology, does not require a multi-billion year-old earth, and does NOT address the origin of life at all, only its' variety. Current evolutionary theory can be traced to the moment when Darwin proposed his theory on the mechanics of evolution which overturned the previously held view proposed by LaMarck. LaMarcks theory of evolution proposed that an animal gains a trait in its' lifetime and then passes it on. Darwins theory replaced LaMarcks theory by proposing that changes were inherited, but not acquired during the lifetime of the individual. He attributed these changes to random mutations present from birth. Darwin did not stop with a mechanism for these changes, he also divised the "theory of Natural Selection" as a mechanism to favor beneficial mutations. Later, he proposed his "theory of Common Descent" as an explanation of the current variety we see in life. This theory proposes that at some point in the distant past, all living things share a common ancestor. Darwins three ideas have been confirmed through genetics, phylogenics, taxonomy, and paleontology, as well as being supported by every branch of science which can address biology. Through more discoveries, other scientists have developed even more specific theories based on evolution such as, "punctuated equilibrium", "evo-devo", and even the "Out of Africa" theory of human origins. The more we understand about the history of life, the more theories will be developed, but they are all part of evolutionary theory.
The Tendencies For Varieties To Depart Infinitely From Their Original Forms.Or, in other words a theory of natural selection that was very much like Darwin's theory. Both papers were read out to the Linnean Society in 1858, so that makes Wallace the co-discoverer of the theory of evolution by natural selection.Biogeography was the greatest contribution made by Wallace to evolutionary understanding.
For any hypothesis to be considered a theory, a scientific journal must be written and submitted to undergo rigorous peer evaluation. The theory of evolution has sufficient evidence and support to withstand the dissection from biologists around the world. However, keep in mind that the theory of evolution is not "proven" as nothing in the realm of science can be confirmed with absolute certainty. Evolution is widely accepted among the scientifically literate. It is broadly rejected among those who hold religious objections. The theory has enjoyed tremendous success over the years, and is now considered to be the foundational theory of biology. Theodosius Dobzhansky once said, "nothing in biology makes sense except in the light of evolution." I would consider that a pretty strong validation.
Some Christians do believe in Evolution. Others do not. For those who do, they believe it the same way as any. Those who do not, argue that without Adam and Eve having fallen in the garden of Eden, there would have been no reason for Christ to sacrifice himself. Their "theory" then, is that the heavens and Earth were created as described in Genesis. There is only one theory of evolution, that particular one proved by science. The majority of Christianity accepts this theory as being correct, and makes no claim as to its own theory (which would in fact, only be a hypothesis until overwhelming evidence was gathered).
Evolution, the change in allele frequency over time in a population of organisms, is fact. The theory of evolution by natural selection explains much about the fact of evolution. That is what make a theory, explanation. Facts are useful, but uninteresting. Theories explain facts by gathering many convergent pieces of evidence and putting it into a logical and consistent whole.