The figure below 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 this data,which mass extinction had the biggest impact on the overall diversity of life on Earth?

Question

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

The Figure Below Shows the Number of Living Taxonomic Families