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rock
(Encyclopedia) rock, aggregation of solid matter composed of one or more of the minerals forming the earth's crust. The scientific study of rocks is called petrology. Rocks are commonly divided,…Nobel Prize for Physics
Below find every winner of the Nobel Prize in Physics, from 1901 through 2016. For years not listed, no award was made. 1901Wilhelm K. Roentgen (Germany), for discovery of Roentgen…Amazon, river, Peru and Brazil
(Encyclopedia) Amazon, Port. AmazonasAmazon,ämäzōˈnəs [key], world's second longest river, c.3,900 mi (6,280 km) long, formed by the junction in N Peru's Andes Mts. of two major headstreams, the…Egypt Department of State Background
U.S. Department of State Background Note Egypt Index: People and History Government and Political Conditions National Security Economy Foreign Relations U.S.-Egyptian Relations PEOPLE AND…Mexico Department of State Background
U.S. Department of State Background Note Mexico The Aztec Pyramid of the Sun in Teotihuacan, Mexico, December 23, 1999. [© AP Images] PROFILE OFFICIAL NAME: United Mexican States…Nile
(Encyclopedia) Nile, longest river in the world, c.4,160 mi (6,695 km) long from its remotest headstream, the Luvironza River in Burundi, central Africa, to its delta on the Mediterranean Sea, NE…Geology of the Grand Canyon: Chapter I. The Plateau Province.
CHAPTER II. GEOGRAPHY OF THE G...CHAPTER I. THE PLATEAU PROVINCE.The investigations made by this division of the Geological Survey during the last two years have been pursued with the object…Dinosaur Fossils (By U.S. State!)
Top of Page Source: iStockMost people are familiar with their state’s official flower and flag, but did you know that almost every state has an official fossil as well? These state symbols are a…Oceans and Seas
Top of Page Source: Getty ImagesWater is arguably one of the most important substances on Earth, essential not only for flora and fauna, but for sustaining human life. As such, waterways are crucial…Arizona
(Encyclopedia) CE5 ArizonaArizonaârˌəzōˈnə [key], state in the SW United States. It is bordered by Utah (N), New Mexico (E), Mexico (S), and, largely across the Colorado River, Nevada and…Trending
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