The following figure shows the number of living taxonomic families that existed on Earth during the last 540 million years.The sudden decreases in family numbers at 445,360,250,200,and 65 million years ago represent Earth's five mass extinction events.Based on these data,which mass extinction had the biggest impact on the overall diversity of life on Earth?

Question

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The mass extinction event that occurred 250 million years ago, known as the Permian-Triassic extinction, had the biggest impact on the overall diversity of life on Earth. This event resulted in the loss of approximately 96% of all marine species and 70% of terrestrial vertebrate species. This is the most severe extinction event in Earth's history.

The Following Figure Shows the Number of Living Taxonomic Families