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In terms of biological evolution, every species on Earth has evolved from previous species, and every anatomical feature, and every chemical pathway or other biological trait is also the product of evolution. Multicellular organisms evolved from unicellular organisms. Mammals and birds both evolved from reptiles, which evolved from amphibians which evolved from fish.
(alternate answer)
Evolution is still a theory. mainly because no has been able to explain why if a species "evolved" do we still have the original species... and why do we not have hundreds of transitional, "inbetweener", species. If an elephant came from a frog... there should be something in between. Are we to believe that something came from nothing, all by it's self...
(reply to alternate answer)
Evolution is still a theory, because theories are what science produces. Only religion produces dogma. Plenty of species are extinct, so I do not see the basis for your question ""why do we still have the original species?" However, evolution is not always a process of replacement. It is also a process of filling new ecological niches. So an earlier species can fill one niche while a later species that evolved from the earlier species can fill a different niche. Then there is the claim that "If an elephant came from a frog...there should be something in between" We don't know that the evolution of elephants can be traced directly to frogs, although in general (as I said previously) mammals did evolve from reptiles which evolved from amphibians. But of course, this means that there was something in between frogs and elephants. Actually there would have been a great many intermediary phases, some of which species still exist, and others of which are extinct. Finally, nothing in the theory of evolution says that something came from nothing, all by itself. Each step of evolution comes from a previous step, and the first step of biological evolution is non-living matter, known as the primordial soup. And that too can be traced back, step by step, as far as the Big Bang. The origin of the Big Bang itself falls beyond the realm of biological evolution and is a complex topic, and that too is not something from nothing (but I am not going to get into the details, which would be a digression). Also, for Creationists, it does you no good to complain that evolution tries to make something from nothing. You have no explanation of where God comes from. Your theory is the one that tries to come up with something from nothing.
What else can I help you with?
What are three examples of environmental changes involved in evolution?
Three changes are probably global temperature change(Ice Age,NOW), and...nothing else. This is most likely the only environmental change that affects evolution.
How is theory of evolution of Darwin and Hugo deVries different?
Darwin considered evolution to be caused due to : 1)small changes/variations that occured 2)these variations were directed specifically towards adapting to the environment(directional) 3)evolution was a slow process De Vries believed that evolution occured by: 1)large changes that occured 2)these changes were mutations and were stochastic or random, not directional 3)evolution occured in fits and starts and was not a slow ongoing process
Why is evolution dying out?
That is incorrect. Evolution IS important. It is a theory that states that a gradual, slow change happens within a species over a long period of time. Without evolution we might still be apes or something else. So Evolution is very far from being unimportant.
What are 3 examples of Temperature?
Kelvin, celsius, Fahrenheit
What are three examples for chemical change?
Burning, rusting, and production of gas are examples of chemical changes.
Describe with at least 3 examples how the evolution of the colonial system helped to nurture democracy?
blood vessel
Is a yucca moth an example of co-evolution?
no u need something else to make it co-evolution, but there are many examples of co-evolution including a yucca moth
What are some examples of scientific theories?
evolution,the big bang theory
What are three examples of theory?
the theory of evolution, general relativity, quantum theory
What are two examples of organisims that have developed differences as a result of divergent evolution?
Humans and monkeys
What are non examples of evolution?
Non-examples of evolution could include changes that are not driven by genetic variations or natural selection, such as changes due to environmental factors like climate or human intervention. For instance, the growth of a callus on the skin in response to friction is not an example of evolution, as it does not involve changes in the genetic makeup of an organism's offspring over generations.
Can Pokemon have a stage 3 evolution?
Yes they can.
All of the scenarios are examples of evolution with the EXCEPTION of the?
introduction of a new species into an ecosystem. This is an example of migration or dispersal, not evolution, as the genetic makeup of the new species remains unchanged. Evolution involves changes in the genetic composition of a population over time.
What are the release dates for Crisis - 2011 Evolution 1-3?
Crisis - 2011 Evolution 1-3 was released on: USA: 28 September 2011
What are examples of recent Evolution?
A bacteria has evolved to be able to consume nylon, a product invented only in 1935.
What conditions contribute to evolution?
Variability, heredity, and natural selection are 3 main things that contribute to evolution.
What are 3 examples in new moon by Stephenie Meyer?
3 examples of what?
