are required
71Oath of office — Lyndon B. Johnson taking the presidential oath of office in 1963, after the assassination of John F. Kennedy An oath of office is an oath or affirmation a person takes before undertaking the duties of an office, usually a position in government… …
72Military service — For military service in the meaning of an army as a military defense organization, see Armed forces. For state mandated military service, see Conscription. For the feudal institution, see Knight service. Military service, in its simplest sense,… …
73Airspace class — The world s navigable airspace is divided into three dimensional segments, each of which is assigned to a specific class. Most nations adhere to the classification specified by the International Civil Aviation Organization (ICAO) and described… …
74National identification number — A national identification number, national identity number, or national insurance number is used by the governments of many countries as a means of tracking their citizens, permanent residents, and temporary residents for the purposes of work,… …
75Electric bicycle laws — Canada, Europe and the United States have all passed legislation regarding electric bicycles. Most jurisdictions recognize these as distinct from existing moped and motorcycle classifications because they are more akin to bicycles than their… …
76Driver's license in the United States — In the United States, nearly all driver s licenses are issued by individual states (including Washington, D.C. and territories), rather than the federal government. Drivers are normally required to obtain a license from their state of residence,… …
77automation — /aw teuh may sheuhn/, n. 1. the technique, method, or system of operating or controlling a process by highly automatic means, as by electronic devices, reducing human intervention to a minimum. 2. a mechanical device, operated electronically,… …
78metabolism — /meuh tab euh liz euhm/, n. 1. Biol., Physiol. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Cf. anabolism, catabolism …
79nutrition — nutritional, nutritionary, adj. nutritionally, adv. /nooh trish euhn, nyooh /, n. 1. the act or process of nourishing or of being nourished. 2. the science or study of, or a course of study in, nutrition, esp. of humans. 3. the process by which… …
80vitamin — vitaminic, adj. /vuy teuh min/; Brit. also /vit euh min/, n. any of a group of organic substances essential in small quantities to normal metabolism, found in minute amounts in natural foodstuffs or sometimes produced synthetically: deficiencies… …
