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Alps
(Encyclopedia) Alps, great mountain system of S central Europe, c.500 mi (800 km) long and c.100 mi (160 km) wide, curving in a great arc from the Riviera coast on the Mediterranean Sea, along the…NATIONAL PARKS
Name, location, and year authorized Acreage Outstanding characteristicsAcadia (Maine), 1919 47,548.94Rugged seashore on Mt. Desert Island and adjacent mainlandArches (Utah), 1971 76,518.98…The Grand Canyon: Facts, History & Profile
Top of Page Image Source: Getty ImagesFast Grand Canyon Facts Length: 277 miles (446 km) Width: 18 miles (29 km) at widest point Depth: 1 mile (1.6 km) deep Age: Estimated to be between 5-6…mountain
(Encyclopedia) mountain, high land mass projecting conspicuously above its surroundings and usually of limited width at its summit. Although isolated mountains are not unusual, mountains commonly…dating
(Encyclopedia) dating, the determination of the age of an object, of a natural phenomenon, or of a series of events. There are two basic types of dating methods, relative and absolute. In relative…ocean
(Encyclopedia) ocean, interconnected mass of saltwater covering 70.78% of the surface of the earth, often called the world ocean. It is subdivided into four (or five) major units that are separated…Canada
(Encyclopedia) CE5 CE5 Canada Canada kănˈədə [key], independent nation (2020 est. pop. 37,742,154), 3,851,787 sq…Africa
(Encyclopedia) CE5 AfricaAfricaăfˈrĭkə [key], second largest continent (2015 est. pop. 1,194,370,000), c.11,677,240 sq mi (30,244,050 sq km) including adjacent islands. Broad to the north (c.4,600…Trending
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