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====Lamark's Theory of Evolution====
: In the early 19th century [[Jean-Baptiste Lamark]] developed a '''theory of evolution'''. However, he did not propose [[Natural Selection|natural selection]] as the cause.
: [[Jean -Baptiste Lamark|Lamark]] believed that the behaviour and environment of an [[organism]] would cause it to change in its lifetime and those changes could be passed on to their [[offspring]].
: He suggested that the '''evolution''' of the [[giraffe]] was caused by many generations of [[giraffe]] stretching their necks to reach higher food. When a [[giraffe]] stretched its neck then the [[offspring]] would also have longer necks.
: [[Jean-Baptiste Lamark]] believed that all [[species]] began as simple worms which would spontaneously appear and over time their behaviour and environment would change them and pass that change onto their offspring.: [[Jean-Baptiste Lamark]] was right that [[species]] '''evolve''' over generations, but wrong about the cause.
====Charles Darwin "On the Origin of Species"====