Mass Extinctions

Mass extinctions are critical events in Earth's history marked by the abrupt loss of a significant proportion of its biodiversity. Throughout geological time, five major mass extinctions have been identified: the Ordovician-Silurian, Devonian, Permian-Triassic, Triassic-Jurassic, and Cretaceous-Paleogene extinctions. Each event led ___ _________ _____ ____ ___ __________ ________ ______ _______ ________ _______.
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