Final answer:
The most recent ice age began two to three million years ago.
Step-by-step explanation:
The most recent ice age began two to three million years ago. The Earth has experienced several ice ages throughout its history, and the most recent one, known as the Pleistocene epoch, began around this time. During the ice age, large parts of the Earth's surface were covered in ice sheets, causing significant changes to the climate and environment.
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