231Which is commonly cited in geography references as the largest sea in the world?
232Which is the longest mountain range in the world above sea level?
233Which continent has the largest number of independent countries?
234Africa has historically been nicknamed which of the following?
235Which continent has no permanent human population?
236Which is the largest desert in Asia?
237Which is the longest river in Europe?
238Which river is generally regarded as the longest in North America?
239The Nile, the traditionally longest river in the world, flows mainly through which continent?
240Which is the longest river in Asia?
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