The iceberg that sank the Titanic on April 15, 1912 was ...
Ozone loss in the Arctic or the North Pole. The Earth is ...
Krakatoa is a volcanic island situated in the Sunda Strait ...
An aftershock is a smaller earthquake that occurs after a ...
Submarine volcanoes are underwater vents or fissures in the ...
Potable water refers to water that is 'drinkable' and will ...
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