Three critical factors in the end-Permian mass extinction - Phys.org

Two-hundred fifty-two million years ago, volcanic eruptions led to massive climate changes. Around the globe, roughly 75 percent of all land-based organisms and roughly 90 percent of all marine organisms died out as a result. Dr. William Foster from Universit…

Two-hundred fifty-two million years ago, volcanic eruptions led to massive climate changes. Around the globe, roughly 75 percent of all land-based organisms and roughly 90 percent of all marine organ… [+4585 chars]

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