According to Darwun's Theory a species goes through phases of evolution when the changes occurs in their body or sorroundings.But this was disproved by an experiment.In the experiment Mice were taken and the tails were cut out.Then these mice were alloted for reproduction the new offspring of these mice had tails then again the new born offspring's tail was cut and allotted for reproduction but here the new born mice too had tail.But according to Darwin's theory the mice Mustn't have tail Because of the evolution.So Darwin's theory was criticizedAnother fact:- Lets assume or imagine that The whole earth got destroyed ,everyone died.Then imagine That the new Aliens from outer space came to Earth and conducted study on the fossils of things and by researching they got wheels of bike and wheels of bus. if According to Darwin's theory they will be concluding that bike was the 1st form of the thing and it had 2 wheels and due to evolution it changed to 4 wheels.but in reality bike and Bus are different types of vehicles.So from this we can understand that the Darwin's evolution theory isn't right.