Evolution is the process which results in the development of new species from previous forms.
This latter definition is called speciation and is assumed to explain the appearance of new kinds of organisms Theories of Evolution Special creation. Many religions teach that species were created by God and have existed on earth u naltered from generation to generation. Others accept that change does occur but organisms derived from non-living material more than 3000 million years ago. This is a modernisation of a theory put forward in 1859 by Charles Darwin. An adult frog produces around 2000 eggs.