Animal Species:Bull Shark, Carcharhinus leucas Valenciennes, 1839. The Bull Shark is one of the few sharks that are potentially dangerous to people and is probably responsible for most of the shark attacks in and around Sydney Harbour. The species is also the only widely distibuted shark that stays in fresh water for long periods of time to feed and breed.
A rally of the trade union UNISON in Oxford during a strike in 2006. A labor union, or trade union, is an association of fair wage-earners uniting for the purpose of maintaining and improving the conditions of their employment. Over a three-hundred-year period, labor unions have developed into a number of forms, influenced by various political and economic regimes.
Unions are organizations that negotiate with corporations, businesses and other organizations on behalf of union members. There are trade unions, which represent workers who do a particular type of job, and industrial unions, which represent workers in a particular industry. The American Federation of Labor-Congress of Industrial Organizations (AFL-CIO) is a trade union, while the United Auto Workers (UAW) is an industrial union.