Australia's Great Barrier Reef is 1,250 miles long!
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Every year, Alaska has about 5,000 earthquakes.
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Venice Island was built on a foundation of tree trunks. 1200 years later, those same trunks still support almost all of central Venice.
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The Atlantic Ocean is saltier than the Pacific Ocean.
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There are more than 50,000 earthquakes throughout the world every year!
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