Ice age is a period in which a planet is undergoing a very cold and snowy period which covers large parts of the planet for a long time. Periods vary from a few hundred to a thousands of years. (SG1: "Beneath the Surface")
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Ice age is a period in which a planet is undergoing a very cold and snowy period which covers large parts of the planet for a long time. Periods vary from a few hundred to a thousands of years. (SG1: "Beneath the Surface")