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lake, body of water

(Encyclopedia) lake, inland body of standing water occupying a hollow in the earth's surface. The study of lakes and other freshwater basins is known as limnology. Lakes are of particular importance…

fossil

(Encyclopedia) fossil, remains or imprints of plants or animals preserved from prehistoric times by the operation of natural conditions. Fossils are found in sedimentary rock, asphalt deposits, and…

Great Basin

(Encyclopedia) Great Basin, semiarid, N section of the Basin and Range province, the intermontane plateau region of W United States and N Mexico. Lying mostly in Nevada and extending into California…

Great Lakes, North America

(Encyclopedia) Great Lakes, group of five freshwater lakes, central North America, creating a natural border between the United States and Canada and forming the largest body of freshwater in the…

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…

Neanderthal man

(Encyclopedia) Neanderthal manNeanderthal mannēănˈdərthôlˌ, –tôlˌ [key] or Neandertal manNeandertal man–tôlˌ [key], a species of Homo, the genus to which contemporary humans belong, known as H.…

Paleolithic period

(Encyclopedia) Paleolithic periodPaleolithic periodpāˌlēəlĭthˈĭk, –lēō–, pălˌ– [key] or Old Stone Age, the earliest period of human development and the longest phase of mankind's history. It is…

Iowa

Iowa State Information Capital: Des Monies  Official Name: The State of Iowa Organized as a territory/republic: June 12, 1838 Entered Union (rank): December 28, 1846 (29th) Present constitution…

Sahara

(Encyclopedia) SaharaSaharasəhârˈə [key] [Arab.,=desert], world's largest desert, c.3,500,000 sq mi (9,065,000 sq km), N Africa; the western part of a great arid zone that continues into SW Asia.…

Maryland

Maryland State Information Capital: Annapolis Official Name: State of Maryland Organized as a Territory: 1632 Entered Union & Rank: April 28, 1788 (7th of the original 13 states) Present…