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===About Evolution===
: The different types of creatures we see today looked different millions of years ago. The creatures have '''evolved'''.
: A single animal or plant does not '''evolve'''. A whole population '''evolves''' over many [[generation]]sgenerations.
: '''Evolution''' can be shown by looking at [[fossil]]s of creatures that lived millions of years ago.
: Some [[variation]]s are [[heredity|hereditary]] which means they are passed on from parent to [[offspring]].
: If a [[heredity|heritable]] [[variation]] gives a member of the [[species]] an advantage over the others in its environment, then it is more likely to survive and [[Reproduction|reproduce]]. This is [[Natural Selection|natural selection]] where some [[variation]]s cause [[organism]]s to die while other [[variation]]s cause [[organism]]s to have more [[offspring]].
: [[Variation]] can be caused by random [[mutation]]s which occur during [[reproduction]]. If that [[mutation]] provides an advantage to that [[organism]] over others in the [[species]] then it will have more [[offspring]] than others spreading that beneficial [[mutation]]. Over several [[generation]]s generations that [[mutation]] will be spread throughout the [[species]]. Over time many of these [[mutation]]s occur changing the entire [[population]] until they are no longer the same [[species]] as they were prior to these [[mutation]]s.
===Development of the Theory of Evolution===