There is evidence that extreme cold periods 600 to 700 million years ago froze the oceans from pole to pole and covered the continents with glaciers, known as ____________________.

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The Answer of There is evidence that extreme cold periods 600 to 700 million years ago froze the oceans from pole to pole and covered the continents with glaciers, known as ____________________.

There Is Evidence That Extreme Cold Periods 600 to 700