Evolution is a theory of the origin and transformation of life forms over time. Plants and animals exist on earth in an enormous abundance of forms or species. Evolution seeks to explain scientifically the origin and the development of new species from old species, as well as the beginning of life itself.

The existence of enormous numbers of older species, most of which are now extinct, is supported by the evidence of fossils. The rise of newer species is supported by a variety of evidences, including their living existence. Evolution seeks to explain with only natural evidences that these enormous numbers of species (both extant and extinct) originated eons ago in the Pre-Cambrian Era as single-celled life forms. It also seeks to show that over the ...

  • Loading...
locked icon

Sign in to access this content

Get a 30 day FREE TRIAL

  • Watch videos from a variety of sources bringing classroom topics to life
  • Read modern, diverse business cases
  • Explore hundreds of books and reference titles