Evolution, the combination of such processes as Natural Selection, Sexual Selection, and others, is the subsequent collection of scientific processes that eventually change one organism into another. It is important to discount a few widely held myths here that Creationists
often erroneously use to discount Evolution, bringing up half-baked ideas about how one or more "facts" disprove evolution, without bothering to actually know what they're talking about. However, a little care and attempt at education can easily clear up these mistakes:
1.) Evolution does NOT necessarily dictate that animals (or plants, or fungi, or whatever you fancy) must evolve into something more complex. If all animals over the size of cockroaches were wiped out tomorrow, that would be a form of evolution: the Cockroaches and smaller animals would be the surviving species, and "Survival of the Fittest" (a common saying used in evolution) would hold true.
2.) Evolution does NOT, I repeat NOT suggest that humans "magically appeared from crawling fish". Evolution takes time. HUGE amounts of time. We're talking about half a billion years here (~500,000,000)for the total evolution from the first protochordates into the modern Homo sapiens. Not a couple days. Not even a couple centuries. This time span is so long that it's often hard to comprehend. The changes were gradual, as some random "mistakes" in our DNA made some animals better able to adapt, and others not as able to adapt. It is NOT like throwing sand in the air and having it come down as a sand castle. It is, however, like sprinkling little tiny bits of sand here and there - sometimes a grain at a time - and eventually building up to a sandcastle. And sometimes having bits of the sandcastle knocked down.
3.) Species that died out, such as Homo neanderthalis (Neaderthal Man) are not counterexamples. In fact, it shows that two different species, with two different natural "sets of equipment", have different ways (and thus chances) of surviving or outlasting eachother. We and Neanderthals DID stem from the same common ancestor. However, whereas Neanderthals had stocky, tough, but not to bright build, we went the lean and brainy root. That was fine for a little while, but soon we outcompeted them, and they died out.
4.) In regards to the comment above that some species were found in the wrong area: The earth moves. Ever see a volcano? An earthquake? Rocks don't always just sit there.
5.) Any educated biologist will not respond by saying "oh, you're right, evolution didn't happen."
Bill: But monkeys and fish look real different, so evolution must be wrong! Fish change into monkeys suddenly? LOL!
Jill: That's not really what Evolution says...
A scientific theory
that all life on earth descended from a common ancestor. Evolution has been repeatedly proven and observed time and time again, yet most of the morons writing definitions for Evolution on urbandictionary.com choose to ignore that.
/Mentally retarded redneck
: Evolution b'aint be reel cuz dat der bibl tingy be sayin' su!
The idea that organisms change over time, and that is change occurs through natural selection which allows favorable traits to be passed along through generations. It has been refered to as a theory, which, in science, means it is an idea that has not been disproven. Many scientists are moving towards calling it the Law of Evolution, similar to the Law of Gravity, in order to help reduce frivolous claims that it is "only a theory" by people ignorant of what a scientific theory entails.
Some (especially miseducated critics) refer to macro and microevolution. There is no such thing. Evolution is evolution. Fruit flys, rats, frogs, etc., have all been observed undergoing character change in laboritories, resulting in the inability to mate with other members of the base species (the control), thus forming a new species. Several examples of so-called macroevolution (the change at a genus level) have been observed by biologists in the rain forest. Furthermore, good fossil evidence shows transition between genera, and even higher taxanomic orders (incorrectly called Kingdom, Phylum, etc. - current work in phylogentic taxonomy does away with Linnean ranks). Representatives of higher order change in the fossil record includes change with fish, fish to amphibians, with amphibians, within reptiles, "reptiles" to dinosaurs, within dinosaurs, dinosaurs to "birds", within "birds", "reptiles" to mammals, within mammals, and other mammals to humans. I am not mentioning invertebrates here...
1. The process by which one state changes into another. Anything which is not static evolves over time. The word evolution specifically excludes any connotation of improvement or progress, so even 'negative' changes are evolution. In biology, this definition is often observed in terms of the change of gene frequencies in natural populations. There is no controversy about this definition.
2. The theory that species give rise to other species. This process of speciation can be accomplished in a number of ways, all of which must result in two (or more) populations becoming genetically isolated. This can be accomplished physically (allopatry and peripatry) or through division of patch types or through behavioral mechanisms (sympatry). This has been observed at low taxonomic levels. For instance, wheat is a modern species resulting from 2 instances of non-disjunction and one hybridization event that all occurred within the last 5000 years. The original plant has been identified from seeds from tombs in Egypt.
The creation of new higher level taxa is often referred to as macroevolution by non-scientists, but this usage is incorrect. The only difference between the origins of higher taxa and species is time. Today's species will eventually give rise to genera as they continue to diverge from their sister-taxa and continue to speciate themselves. All higher taxa were once just a species. Macroevolution properly refers to selection that operates above the species ...
How your pokemon change at certain levels!
"My Charamander got to level 16 and evolved into Charmeleon!"
1. In biology: Descent with modification. Change in the genetic composition of a population during successive generations, as a result of natural selection acting on the genetic variation among individuals, and resulting in the development of new species.
2. In everyday speech: A gradual process in which something changes into a different and usually more complex or better form.
1. Darwin's theory of evolution does for biology what quantum mechanics does for physics.
2. It is interesting to note the evolution in computers over the years.
In the beginning we were all fish, swimming around in the water. And then one day a couple of fish had a retard baby, and the retard baby was different so it got to live. So retard fish goes on to make more retard babies, and then one day a retard baby fish crawled out of the ocean with its mutant fish hands, and it had butt sex with a squirrel or something, and made retard frog-squirrel. And then that had a retard baby which was a monkey-fish-frog, and then this monkey-fish-frog had butt sex with another monkey, and then that monkey had a mutant retard baby that screwed another monkey, and then that screwed another monkey and then that made you. So there you go, you're the retarded offspring of five monkeys having butt sex with a fish-squirrel, congratulations.
evolution explains how we evolved