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The Dall sheep, Ovis dalli, a mountain sheep of far northern North America, was the subject of one o
California sea lions are common prey for mammal-eating killer whales on the west coast of North Amer
The Moon's north pole during summer.
Monstrous people from distant lands depicted in a fifteenth-century European woodcut.
Maps are important tools in political science as they help us see relationships between politics and
Wang Guochen, c. nineteenth century