Assertion: mammoth's extinction | /r/CreatedBy | extra-terrestrial impact event
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text: A complete and detailed discussion of all extinction theories is beyond the scope of this note; however, several ideas have been suggested to explain the extinctions of the ice age mammals towards the end of the ice age (see summary by Tyler Faith, 2011 and Ian M. Lange): a) climate change, such as the impact of periodic warm and very cold periods, toward the end of the ice age; b) change in nutritional quality, types, and range of vegetation eaten by megafauna in an area due to climate change and/or change in the soil nutrients; c) change in the geographic range of animal communities; d) increased burning of vegetation; e) the arrival of Clovis hunter - gatherers in North America, who would have hunted the megafauna to extinction; and f) a very controversial idea that extinction was caused by an extra-terrestrial impact event.