Originated in Sydney in 2007, Earth Hour is a global event ...
The Montseny Biosphere Reserve is one of the Pyrenees ...
Mount Bulusan is the southernmost volcano on Luzon Island ...
Mount Vesuvius is a stratovolcano in the Gulf of Naples, ...
Popocatepetl is an active volcano, located in the states of ...
A tsunami earthquake is an earthquake that triggers a ...
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