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Snowball Earth
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Snowball Earth
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During the Ice age 700 million years ago, ice covered the entire globe. It reflected by so much of the sun's heat that it seemed that the world would never heat up again. Fortunately, volcanoes came to the rescue, insulating the earth in CO2.
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Authors
Infobase
BBC Worldwide Learning (Firm)
Subjects
Geology.
Earth (Planet)--Surface.
Seismology.
Earth movements.
Earth sciences.
Language
English