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71North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …
72Silurian Period — Interval of geologic time, 443–417 million years ago. The third period of the Paleozoic Era, the Silurian follows the Ordovician Period and precedes the Devonian. It marks the first appearance of land plants and jawed fishes. The continents were… …
73Opportunity rover — (MER B) Opportunity in April 2003 Operator NASA Mission type Rover …
74List of Torchwood items — This is a list of extraterrestrial, supernatural, otherworldly and futuristic items featured in the BBC science fiction drama Torchwood and its spin off media. 0 93 D glassesanchor|3 D glassesOriginally used by the Tenth Doctor in Doomsday to… …
75Space Electronics — LLC is a company based in Connecticut that specializes in mass properties measurement instruments.HistoryDick Boynton founded Space Electronics in 1959 while attending graduate courses at Yale University. The company existed in Dick s basement… …
76Ehime Maru and USS Greeneville collision — infobox generic | color = #cc9999 name = Ehime Maru and USS Greeneville collision sub0 = img1 = EhimeMaru.jpg width1 = 325px cap1 = The Japanese high school fishing training ship Ehime Maru lbl1 = Date: row1 = February 9, 2001 lbl2 = Place: row2 …
77Egypt — • Provides information on history, religion, and literature Catholic Encyclopedia. Kevin Knight. 2006. Egypt Egypt † …
78Passive radar — systems (also referred to as passive coherent location and passive covert radar) encompass a class of radar systems that detect and track objects by processing reflections from non cooperative sources of illumination in the environment, such as… …
79Rangekeeper — Rangekeepers were electromechanical fire control computers used primarily during the early part of the 20th century. They were sophisticated analog computers whose development reached its zenith following World War II, specifically the Computer… …
80international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
