An earthquake's hypocenter is the position where the ...
The iceberg that sank the Titanic on April 15, 1912 was ...
Mount Pelée, standing more than 4,500 feet high on the ...
The Montseny Biosphere Reserve is one of the Pyrenees ...
A visible aggregate of minute water droplets suspended in ...
The underground river that flows 13,000ft below ground ...
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