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Paleozoic - climate change
Mesozoic - meteor
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∙ 13y ago
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Why do you think most extinction's occur as background extinctions?
Most extinctions occur as background extinctions because they are longer time periods unlike the shorter mass extinctions which there were only two in the Paleozoic era, the Ordovician mass extinction, and the Permian/Triassic extinction in which 95% of all marine animals became extinct
There will be a mass extinction in the cenozoic era?
Almost certainly. There have already been five mass extinctions in the Phanerozoic Eon, so there is no reason to believe there will not be a sixth. Some say we are already in one.
Why did the civil war reconstruction era begin and end?
The Reconstruction era began in 1865 and ended in 1877.
What event ended the paleozoic and mesozoic era?
Extinction did.
What is the name for the modern era which began approximtely 65 million years ago with the mass extinction of the dinosaurs?
The Cretaceous period ended with the extinction of the dinosaurs. The period that followed the mass extinction was called the Paleocene. This was a time of the mammals.
When did renaissance era end begin and end?
began in R and ended in E
When did Mesozoic era begin and end?
The Mesozoic era began roughly 250 million years ago, and ended 65 million years ago. (This Era ended because of the K.T. extinction)
What era ended in the largest mass extinction in earth's history?
Mesozoic
What is the name for the modern era which began approximately 65 million years ago with the mass extinction of the dinosaurs?
The modern era that began approximately 65 million years ago with the mass extinction of the dinosaurs is called the Cenozoic Era.
When did the Cenozoic era end?
The Cenozoic era started 65 million years ago.
When did the aztec era start?
The Aztec era began in 1200 A.D. and ended in 1512 A.D.
When did the precambrian era begin?
The Precambrian Era began in the time period 4600 and ended in 570.
