Geological Timeline

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What is the Geological Timeline?

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The Geological Timeline is a system of chronological dating that relates geological strata to time, helping to understand Earth's history.

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What are the main divisions of the Geological Timeline?

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The main divisions are Eons, Eras, Periods, Epochs, and Ages.

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What is the Precambrian Time?

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The Precambrian Time is the earliest part of Earth's history, covering about 88% of Earth's geological time, before the Cambrian Period.

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What significant event marks the beginning of the Paleozoic Era?

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The Paleozoic Era began with the Cambrian Explosion, a rapid diversification of life forms.

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What is Pangaea?

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Pangaea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras, bringing together most of the Earth's landmasses.

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What era do we currently live in?

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We currently live in the Cenozoic Era.

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Why is the Cenozoic Era significant?

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The Cenozoic Era is significant because it is the most recent era, and it includes the rise of mammals and humans.

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How old is the Earth?

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The Earth is approximately 4.6 billion years old.

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What is a mass extinction?

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A mass extinction is a widespread and rapid decrease in the biodiversity on Earth, often marking the end of an era.

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What event is known to have caused the end of the dinosaurs?

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The mass extinction event at the end of the Cretaceous Period, likely caused by an asteroid impact.