The 5 mass extinction events that shaped the history of Earth — and the 6th that's happening now

Mass extinction facts and information from National Geographic

Earth's most severe mass extinction event! | Science Sphere

Extinction Events

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12K views · 161 reactions | Extinction is a natural and common part of Earth's history, with an estimated 99% of all species that have ever lived now extinct. Catastrophic events like volcanic eruptions, asteroid impacts, and climate change have driven mass extinctions, which have paved the way for new life forms to evolve. While extinction is the norm, the survival and evolution of some species, like humans, are notable exceptions. | Science Acumen | Facebook

Why did the dinosaurs go extinct?