What is another word for theory of organic evolution?
Pronunciation: [θˈi͡əɹi ɒv ɔːɡˈanɪk ɪvəlˈuːʃən] (IPA) 
The theory of organic evolution is the scientific concept that explains how living organisms have evolved over time through natural selection and gradual changes. It is also known as the theory of evolution or the Darwinian theory. There are different synonyms for this concept that have been used throughout history, such as the naturalistic theory of evolution, the principle of descent with modification, or the theory of speciation. Other related terms include evolutionary biology, evolutionary theory, and evolutionary science. Regardless of the name, the theory of organic evolution remains one of the most widely accepted and influential scientific theories of all time.
