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water pollution

(Encyclopedia)water pollution, contamination of water resources by harmful wastes; see also sewerage, water supply, pollution, and environmentalism. The United States has enacted extensive federal legislation to ...

Lithuania

(Encyclopedia)CE5 Lithuania lĭtho͞oāˈnēə [key], Lithuanian Lietuva, officially Republic of Lithuania, republic (2015 est. pop. 2,932,000), 25,174 sq mi (65,201 sq km), N central Europe. Lithuania borders o...

money

(Encyclopedia)money, term that refers to two concepts: the abstract unit of account in terms of which the value of goods, services, and obligations can be compared; and anything that is widely established as a mean...

magnetism

(Encyclopedia)CE5 Lines of induction around a single bar magnet and between opposite poles of different magnets magnetism, force of attraction or repulsion between various substances, especially those made of i...

Luxembourg, grand duchy, W Europe

(Encyclopedia)CE5 Luxembourg lŭkˈsəmbûrg, Ger. lo͝okˈsəmbo͝orkh [key], officially Grand Duchy of Luxembourg, grand duchy (2015 est. pop. 567,000), 998 sq mi (2,586 sq km), W Europe. Roughly triangular, i...

Inca

(Encyclopedia)Inca ĭngˈkə [key], pre-Columbian empire, W South America. The name Inca may specifically refer to the emperor, but is generally used to mean the empire or the people. When Francisco Pizarro lande...

Bulgaria

(Encyclopedia)CE5 Bulgaria bŭlgârˈēə [key], Bulgarian Balgarija, officially Republic of Bulgaria, r...

atom

(Encyclopedia)CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...

Mongolia, country, Asia

(Encyclopedia)CE5 Mongolia mŏn-gōˈlēə, mŏng– [key], republic (2015 est. pop. 2,977,000), 604,247 sq mi (1,565,000 sq km), N central Asia; historically known as Outer Mongolia. Bordered on the west, south...

Estonia

(Encyclopedia)CE5 Estonia ĕstōˈnēə [key], Estonian Eesti, officially Republic of Estonia, republic ...