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cocaine
(Encyclopedia)cocaine kōkānˈ, kōˈkān [key], alkaloid drug derived from the leaves of the coca shrub. A commonly abused illegal drug, cocaine has limited medical uses, most often in surgical applications that ...Mbeki, Thabo Mvuyelwa
(Encyclopedia)Mbeki, Thabo Mvuyelwa täˈbō mvo͝oyĕlˈə mbĕkˈē [key], 1942–, South African political leader. Mbeki was born into a politically active family; his father, Govan Mbeki, an official with the A...Annan, Kofi Atta
(Encyclopedia)Annan, Kofi Atta kōˈfē äˈtä ănˈən [key] 1938–2018, Ghanaian diplomat, the seventh secretary-general of the United Nations (1997–2006) and the first person to hold that office who came fro...genetic engineering
(Encyclopedia)CE5 Genetic engineering: Gene-splicing techniques genetic engineering, the use of various methods to manipulate the DNA (genetic material) of cells to change hereditary traits or produce biologica...virus
(Encyclopedia)CE5 Structure of a tobacco mosaic virus, an RNA-containing virus virus, parasite with a noncellular structure composed mainly of nucleic acid within a protein coat. Most viruses are too small (100...Botswana
(Encyclopedia)CE5 Botswana bŏtswäˈnə [key], officially Republic of Botswana, republic (2020 est. pop. ...immunity
(Encyclopedia)immunity, ability of an organism to resist disease by identifying and destroying foreign substances or organisms. Although all animals have some immune capabilities, little is known about nonmammalian...Zambia
(Encyclopedia)CE5 Zambia zămˈbēə [key], officially Republic of Zambia, republic (2015 est. pop. 15,066,000), 290,584 sq mi (752,614 sq km), central Africa. It borders on Congo (Kinshasa) in the north, on Tan...Zimbabwe, country, Africa
(Encyclopedia)CE5 Zimbabwe zimˈbäbwā [key], officially Republic of Zimbabwe, republic (2015 est. pop. 14,229,000), 150,803 sq mi (390,580 sq km), S central Africa. It is bordered on the north by Zambia, on th...Browse by Subject
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