addition is often used
91keyboard instrument — ▪ music Introduction any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… …
92Latin America, history of — Introduction history of the region from the pre Columbian period and including colonization by the Spanish and Portuguese beginning in the 15th century, the 19th century wars of independence, and developments to the end of World War II.… …
93reaction mechanism — Introduction in chemical reactions (chemical reaction), the detailed processes by which chemical substances are transformed into other substances. The reactions themselves may involve the interactions of atoms (atom), molecules (molecule),… …
94respiratory disease — ▪ human disease Introduction any of the diseases and disorders that affect human respiration (respiration, human). Diseases of the respiratory system may affect any of the structures and organs that have to do with breathing, including the… …
95Arabic language — Arabic redirects here. For other uses, see Arabic (disambiguation). For the literary standard, see Modern Standard Arabic. For vernaculars, see varieties of Arabic. For others, see Arabic languages. Arabic العربية/عربي/عربى al ʿarabiyyah/ʿarabī …
96Floating point — In computing, floating point describes a method of representing real numbers in a way that can support a wide range of values. Numbers are, in general, represented approximately to a fixed number of significant digits and scaled using an exponent …
97Romance languages — Romance Geographic distribution: Originally Southern Europe and parts of Africa; now also Latin America, Canada, parts of Lebanon and much of Western Africa Linguistic classification: Indo European Italic …
98Maritime history of California — History of California This article is part of a series Timeline …
99Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel …
100global warming — an increase in the earth s average atmospheric temperature that causes corresponding changes in climate and that may result from the greenhouse effect. [1975 80] * * * Potential increase in global average surface temperatures resulting from… …
