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polar bear

(Encyclopedia)polar bear, large white bear, Ursus maritimus, formerly Thalarctos maritimus, of the coasts of arctic North America, Asia, and Europe. Polar bears usually live on drifting pack ice, but sometimes wand...

Bjørnøya

(Encyclopedia)Bjørnøya byörnˈöyä [key], island, 69 sq mi (179 sq km), in the Barents Sea, c.275 mi (440 km) N of Norway; southernmost island of Svalbard. It rises to 1,759 ft (536 m). There are polar fox and ...

Churchill, town, Canada

(Encyclopedia)Churchill, town, NE Manitoba, Canada, a remote port on Hudson Bay at the mouth of the Churchill River. The northern terminus of the Hudson Bay Railway, ...

grizzly bear

(Encyclopedia)grizzly bear or grizzly, large, powerful North American brown bear, characterized by gray-streaked, or grizzled, fur. Grizzlies are 6 to 8 ft (180–250 cm) long, stand 31⁄2 to 4 ft (105–120 cm) a...

abominable snowman

(Encyclopedia)abominable snowman or yeti yĕtˈē [key], humanlike creature so named because it is associated with the perpetual snow region of the Himalayas. A figure unknown except through tracks ascribed to it a...

bear, in zoology

(Encyclopedia)bear, large mammal of the family Ursidae in the order Carnivora, found almost exclusively in the Northern Hemisphere. Bears have large heads, bulky bodies, massive hindquarters, short, powerful limbs,...

Nilsson, Lennart

(Encyclopedia)Nilsson, Lennart lĕnˈnärt nĭlˈsôn [key], 1922–2017, Swedish photographer who made pioneering microphotographs of embryos and the human body. Nilsson began his career as a photojournalist, chro...

staff tree

(Encyclopedia)staff tree, common name for some temperate members of the Celastraceae, a family of trees and shrubs (many of them climbing forms), widely distributed except in polar regions. These plants typically b...

tundra

(Encyclopedia)tundra tŭnˈdrə [key], treeless plains of N North America and N Eurasia, lying principally along the Arctic Circle, on the coasts and islands of the Arctic Ocean, and to the north of the coniferous ...

polar front

(Encyclopedia)polar front, zone of transition between polar and tropical air masses. Its average position during the winter is at about 30° lat. and during the summer at about 60° lat. In the N Atlantic Ocean, fo...
 

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