Mass Extinctions – TheWorksheets.CoM

Mass Extinctions in Earth History Student Worksheet - HHMI

Mass Extinctions in Earth History Student Worksheet Published April 2016 Page 1 of 4 Considering the Evidence for Mass Extinctions INTRODUCTION At least five times in Earth’s past, the vast majority of plant and animal species have been annihilated in a geologic instant. What triggered these dramatic events, and what might they tell us about ...