(Encyclopedia) mink, semiaquatic carnivorous mammal of the genus Mustela, closely related to the weasel and highly prized for its fur. One species, Mustela vison, is found over most of North America…
(Encyclopedia) parrotfish, common name for a member of a large group of colorful reef fishes of warm seas, resembling the wrasses but of a larger size. Long considered a separate family, Scaridae,…
(Encyclopedia) man-o'-war bird or frigate-bird, most aerial of the water birds, found in the tropic seas. The man-o'-war bird's wingspread (71&fslsh;2 ft/228.5 cm) is the largest in proportion to…
(Encyclopedia) mouth, entrance to the digestive and respiratory tracts. The mouth, or oral cavity, is ordinarily a simple opening in lower animals; in vertebrates it is a more complex structure. In…
(Encyclopedia) pronghorn or prongbuck, hoofed herbivorous mammal, Antilocapra americana, of the W United States and N Mexico. Although it is often called the American, or prong-horned, antelope, the…
(Encyclopedia) Kentucky, river, 259 mi (417 km) long, formed by the junction of the North Fork and the Middle Fork rivers, central Ky., and flowing NW to the Ohio River at Carrollton. Frankfort, Ky…
(Encyclopedia) Dogger BankDogger Bankdôˈgər, dŏˈ– [key], extensive sandbank, c.6,800 sq mi (17,610 sq km), central North Sea, between Great Britain and Denmark. Covered by shallow water (c.55–120 ft/…
(Encyclopedia) Cromarty FirthCromarty Firthkrŏmˈərtē [key], deep narrow inlet of Moray Firth, c.15 mi (25 km) long, Highland, N Scotland. It provides excellent anchorage, its narrow entrance being…
(Encyclopedia) Tarn, river, c.235 mi (380 km) long, rising in the Cévennes Mts., S France, and flowing southwest before emptying into the Garonne River. Deep gorges and canyons formed by the river…
(Encyclopedia) terrace, a level field built on top of a hillslope into the floor of a deep valley to improve cultivation of crops. Terracing uses the runoff from the hill to increase soil…
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