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changes. During a mass extinction event, biodiversity in the fossil record 13. Mass extinctions are caused by global/regionalenvironmental increases/ decreases.

changes. During a mass extinction event, biodiversity in the fossil record 13. Mass extinctions are caused by global/regionalenvironmental increases/ decreases.

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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Please answer this question ASAP. Number 13
changes. During a mass extinction event, biodiversity in the fossil record Permian-Triassic, 248 million years ago release of the sea floor; low oxygen levels in oceans, drop in species died out, including all trilobites and many insect species sea levels About 50% of all species Typc Triassic-Jurassic, 200 million years ago Poorly understood; possibly an extreme decrease in sea level and lower oxygen levels disappeared; end of mammal-like reptiles, leaving mainly dinosaurs in oceans Cretaceous-Tertiary, 65 million years ago Volcanic eruptions and climate cooling; drop in sea levels; large asteroid or comet strike 47% of marine life and Qu 18% of land vertebrates died, including non-avian dinosaurs; mainly turtles, small reptiles, birds, and mammals left 13. Mass extinctions are caused by global/regional environmental increases/ decreases. Lesson 2 Patterns o
Transcribed Image Text:changes. During a mass extinction event, biodiversity in the fossil record Permian-Triassic, 248 million years ago release of the sea floor; low oxygen levels in oceans, drop in species died out, including all trilobites and many insect species sea levels About 50% of all species Typc Triassic-Jurassic, 200 million years ago Poorly understood; possibly an extreme decrease in sea level and lower oxygen levels disappeared; end of mammal-like reptiles, leaving mainly dinosaurs in oceans Cretaceous-Tertiary, 65 million years ago Volcanic eruptions and climate cooling; drop in sea levels; large asteroid or comet strike 47% of marine life and Qu 18% of land vertebrates died, including non-avian dinosaurs; mainly turtles, small reptiles, birds, and mammals left 13. Mass extinctions are caused by global/regional environmental increases/ decreases. Lesson 2 Patterns o
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