Earth's Eras

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What is the Mesozoic era?

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The Mesozoic era is a geological time period that lasted from 252 to 66 million years ago, known as the age of reptiles, including dinosaurs.

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What are the three periods of the Mesozoic era?

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The Mesozoic era is divided into three periods: Triassic, Jurassic, and Cretaceous.

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What is the range of years in the Mesozoic era?

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65-252 million years.

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What is the Paleozoic era?

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The Paleozoic era is a geological time period that lasted from 541 to 252 million years ago, characterized by the emergence of fish, amphibians, and reptiles.

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What is the range of years in the Paleozoic era?

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299-542 million years.

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What is the Cenozoic era?

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The Cenozoic era is the most recent geological era, starting from 66 million years ago to the present, known as the age of mammals.

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What is the range of years in the Cenozoic era?

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0-65 million years ago.

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What significant event marks the end of the Mesozoic era?

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The mass extinction event that occurred around 66 million years ago, leading to the extinction of the dinosaurs.

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What is global warming?

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Global warming refers to the long-term increase in Earth's average surface temperature due to human activities, primarily the emission of greenhouse gases.

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How has global warming affected atmospheric carbon dioxide levels?

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Global warming has increased atmospheric carbon dioxide levels.