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Ice age
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one of the periods in history when ice covered large parts of the world
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Human populations during the ice age had to adapt to extremely cold temperatures and harsh environments.
The woolly mammoth and saber-toothed tiger were iconic animals of the ice age.
Scientists study ice cores to understand the climate changes that occurred during the ice age.
During the last ice age, vast glaciers covered much of North America and Europe.
Geological evidence suggests that the ice age shaped many of the Earth's current landscapes and ecosystems.
