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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
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DHC | History, Entertainment & News on Instagram: "Across Earth’s 4.5 billion-year history, five major mass extinctions have erased enormous portions of life, redefining the course of evolution: • Ordovician-Silurian Extinction (≈444 million years ago): About 85% of marine species vanished as severe ice ages caused sea levels to drop and ecosystems to collapse. • Permian-Triassic Extinction (≈252 million years ago): “The Great Dying” The most catastrophic event in Earth’s history, eliminating ~9
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