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Costa Rica

(Encyclopedia)CE5 Costa Rica kŏsˈtə rēˈkə [key], officially Republic of Costa Rica, republic (2020 est. pop. ...

Nevada

(Encyclopedia)CE5 Nevada nəvădˈə, –vä– [key], far western state of the United States. It is bordered by Utah (E), Arizona (SE), California (SW, W), and Oregon and Idaho (N). In the 20th cent. the ...

Turkmenistan

(Encyclopedia)CE5 Turkmenistan to͞orkmyĕˌnyĭstänˈ [key], republic (2015 est. pop. 5,565,000), 188,455 sq mi (488,100 sq km), central Asia. It borders on Afghanistan and Iran in the south, Uzbekistan in the...

Togo

(Encyclopedia)CE5 Togo, officially Togolese Republic, republic (2015 est. pop. 7,417,000), 21,622 sq mi (56,000 sq km), W Africa. It borders on the Gulf of Guinea in the south, on Ghana in the west, on Burkina F...

South America

(Encyclopedia)CE5 South America, fourth largest continent (2015 est. pop. 416,436,000), c.6,880,000 sq mi (17,819,000 sq km), the southern of the two continents of the Western Hemisphere. It is divided political...

Ecuador

(Encyclopedia)CE5 Ecuador ĕkˈwədôr [key] [Span., = equator], officially Republic of Ecuador, rep...

Alaska

(Encyclopedia)CE5 Alaska əlăˈskə [key], largest in area of the United States but one of the smallest in population, occupying the northwest extremity of the North American continent, separated from the coter...

Fiji

(Encyclopedia)Fiji vēˈtē [key], officially Republic of Fiji, republic (2015 est. pop. 892,000), c.7,000 sq mi (18,130 sq km), South Pacific. Suva is the capital. Polynesians presumably arrived in the islands ...

Azerbaijan, country, Asia

(Encyclopedia)CE5 Azerbaijan äˌzərbījänˈ, ăˌzər– [key], Azeri Azərbaycan, officially Republic of Azerbaijan, republic (2020 est. pop. 10,110,000), 33,428 sq mi (8...

air pollution

(Encyclopedia)air pollution, contamination of the air by noxious gases and minute particles of solid and liquid matter (particulates) in concentrations that endanger health. The major sources of air pollution are t...