The Great Lakes contain about 20% of the world's surface freshwater.
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Your existence required Earth to remain habitable for billions of years.
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The Ganges Delta is the world's largest river delta, covering over 100,000 square kilometers.
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Glacial periods caused sea levels to drop significantly.
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The Erie Canal connected the Great Lakes to the Atlantic Ocean.
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The deepest lake in the world is Lake Baikal in Russia — it reaches a depth of over 5,300 feet.
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The Panama Canal connects the Atlantic and Pacific Oceans.
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There have been five mass extinction events in Earth's history — and we may be in the sixth.
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The Andes are one of the longest mountain ranges in the world.
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