Darwinism Or Darwinian Theory
Darwinism or Darwinian theory is a well-known biological evolution theory initiated by Charles Darwin (1809-1882), an English naturalist.
Darwinism was coined by Thomas Henry Huxley, an English biologist, in 1860 to refer to evolutionary concepts. It states that species grow and change through natural selection.
Darwin specified that evolution is caused by the interaction of three principles:
1. The first one is ‘variation’ which was identified as existing in all forms of life. 2. The second one is ‘heredity’, it is a conservative energy which is being relayed from one generation to the next; and 3. The last one is the ‘struggle for existence’ which identifies the differences between species regarding their ability to adapt to the environment.