Geological Time Periods: Precambrian and Paleozoic

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What is the Precambrian period?

The Precambrian is the earliest part of Earth's history, before the Cambrian period, covering around 88% of Earth's geological timeline.

What major event marks the start of the Paleozoic Era?

The Cambrian Explosion marks the start of the Paleozoic Era, around 541 million years ago.

What is significant about the Ordovician period?

The Ordovician period is known for the diversification of marine life and the first appearance of land plants.

What caused the end of the Paleozoic Era?

The end of the Paleozoic Era was marked by the Permian-Triassic Extinction, the largest mass extinction in Earth's history.

Which era is known for the first appearance of fish?

The Paleozoic Era is known for the first appearance of fish, particularly during the Cambrian period.

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