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The Extinction of the Dinosaurs The first step is solving this mass extinction is to ask were there any others The answer is a resounding yes Altogether over time there has been about eight mass extinctions to large land dwelling vertebrates The most recent was about ten thousand years ago killing most of the giant mammals like mammoths mastodons super-large camels saber-toothed tigers and others Bakker 428 The second step is asking whether or not these mass extinctions follow a pattern The answer again is yes Every time a mass extinction occurs on the land ecosystem the oceanic system is hurt When the dinosaurs died many sea animals also died out Bakker 428-430 The last step is to observe that the extinctions occurred on both land and water at the same time but in different ways All saltwater animals suffered Large land animals suffered but freshwater creatures were left untouched Plants on land did suffer but not nearly as much as the dinosaurs and other creatures that ate them Bakker 431 Since almost the time that the dinosaurs were discovered paleontologists have been pondering the demise of the dinosaurs Over a hundred theories have been produced to explain this mass extinction Psihoyos 255 The dinosaurs may have died because the weather got too hot the weather got too cold the weather got too dry the weather got too wet the weather became too hot in the summer and too cold in the winter the land became too hilly new kinds of plants evolved which poisoned all the dinosaurs new kinds of insects evolved which spread deadly diseases new kinds of mammals evolved which competed for food new kinds of animals evolved which ate all of the dinosaurs eggs a giant meteor hit the earth a supernova exploded near the earth cosmic
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