what causes mass extinction
In some cases, such as the Cretaceous mass extinction event, more than one such factor was involved in the global catastrophe. Catastrophic methane release. Catastrophic methane release has been suggested as a possible cause of mass extinction.
Kirk Janowiak, Eclectic, educated, and loves to teach. Views. There is only one cause for mass extinctions and that is a major or equally massive change in the environment a large scale. Any wide-scale event or series of events that can alter the regional or global climate and/or environment over a large area can, thus, trigger a mass extinction. Such events might include:
How extinctions have shaped our planet. Earth has experienced at least 5 mass extinctions where 2/3 or more of existing species disappear forever. The causes vary from global temperature to sea level changes, to volcanic activity and meteor impacts. Credit: Our Changing Planet, Upper Midwest Aerospace Consortium. For more info: http://www.umac.org/ocp/.