Theory of  evolution



Evolution is the changes of an organism through time.The idea of evolution first started by Aristotle.Aristotle said that organisms from simple to complex and moving to perfectness.Then the idea followed by Jean Baptiste Lamarck.Lammarck said that evolution occurred by the inheritance of acquired characteristics of an organism.He also said that an organism are subject to a force which moves them from simplicity to complexity by mean that organisms change to adapt to the enviroment.Before Charles Darwin theory there is another theory by Charles Lyell which stated that the earth is very old and a lot of natural process had happened until  what earth look like now..Charles Lyell theory leads to the most famous Charles Darwin theory which stated that evolutionary change comes through the production of variation where the process is called the natural selection .

1. Evolution: species come and go through time, while they exist they change.
2. Common descent: organisms are descended from one, or several common ancestors and have diversified from this original stock
3. Species multiply: the diversification of life involves populations of one species diverging until they become two separate species; this has probably occurred billions of times on earth!
4. Gradualism: evolutionary change occurs through incremental small changes within populations; new species are not created suddenly.
5. Natural selection: evolutionary change occurs through variation between individuals; some variants give the individual an extra survival probability.