The Pleistocene ice age began about 2.58 million years ago during which era?

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Multiple Choice

The Pleistocene ice age began about 2.58 million years ago during which era?

Explanation:
Think about where the Pleistocene fits on the geologic timescale. The Pleistocene is an epoch that begins around 2.58 million years ago and sits inside the Quaternary period, which is part of the Cenozoic era. The Cenozoic comes after the Mesozoic and Paleozoic eras, and the Precambrian time is much earlier still. So the start of the Pleistocene ice age occurred during the Cenozoic era.

Think about where the Pleistocene fits on the geologic timescale. The Pleistocene is an epoch that begins around 2.58 million years ago and sits inside the Quaternary period, which is part of the Cenozoic era. The Cenozoic comes after the Mesozoic and Paleozoic eras, and the Precambrian time is much earlier still. So the start of the Pleistocene ice age occurred during the Cenozoic era.

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