Geologic evidence shows that the Earth has been cold and ice covered for about 90 percent of the past 2.5 billion years.

Name: Geologic evidence shows that the Earth has been cold and ice covered for about 90 percent of the past 2.5 billion years.
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Geologic evidence indicates that Earth has experienced several ice ages, but these have occupied far less than 90% of the past 2.5 billion years. The majority of Earth's history has been warmer than present conditions.

Geologic Evidence Shows That the Earth Has Been Cold and Ice