Extinction Events ReviewVersión en línea Review the causes of the Permian and Cretaceous Extinction Events. por Sabrina Ewald 1 Cretaceous Extinction aka KP Extinction 2 Permian Extinction aka The Great Dying Volcanism & disease. Meteor/asteroid impact 75% of life on earth died. Pangaea broke up separating species. Volcanic activity drastically changed the climate. Tsunami from meteor/asteroid impact kills species. 96% of species died. Possibly wildfires destroying forests. Shift in climate due to increased volcanic activity. Increase in carbon and decrease in oxygen – led to acidic oceans. Pangaea had formed, changing the dynamics of the environment.
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