phase-sequence indicator
81Ford Falcon (Australia) — Infobox Automobile name = Ford Falcon aka = Ford Fairmont Ford Futura manufacturer = Ford Motor Company of Australia class = Full size production = 1960–present assembly = Campbellfield, Victoria predecessor =Ford Consul, Ford Zephyr, Ford Zodiac …
82Agriculture and Food Supplies — ▪ 2007 Introduction Bird flu reached Europe and Africa, and concerns over BSE continued to disrupt trade in beef. An international vault for seeds was under construction on an Arctic island. Stocks of important food fish species were reported… …
83Vehicle registration plate — A vehicle registration plate is a metal or plastic plate attached to a motor vehicle or trailer for official identification purposes. The registration identifier is a numeric or alphanumeric code that uniquely identifies the vehicle within the… …
84Second language acquisition — is the process by which people learn a second language in addition to their native language(s). The term second language is used to describe the acquisition of any language after the acquisition of the mother tongue. The language to be learned is …
85community ecology — Introduction study of the organization and functioning of communities (community), which are assemblages of interacting populations of the species living within a particular area or habitat. As populations of species interact with one …
86Continuous Tone-Coded Squelch System — In telecommunications, Continuous Tone Coded Squelch System or CTCSS is a circuit that is used to reduce the annoyance of listening to other users on a shared two way radio communications channel. It is sometimes called tone squelch. Where more… …
87Post excavation — In archaeology once the archaeological record of given site has been excavated, or collected from surface surveys, it is necessary to gain as much data as possible and organize it into a coherent body of information. This process is known as post …
88North American call sign — Many countries have specific conventions for classifying call signs by transmitter characteristics and location. The North American call sign format for radio and television call signs follows a number of conventions. All call signs begin with a… …
89Maya Research Program — A pair of masks depicting an Early Classical ruler of Blue Creek The Maya Research Program is a US based non profit organization (501C3) that sponsors archaeological and ethnographic research in Middle America. Each summer since 1992, they have… …
90Call signs in North America — are frequently still used by North American broadcast stations in addition to amateur radio and other international radio stations that continue to identify by call signs around the world. Each country has a different set of patterns for its own… …
