Season 8 - 25 episodes Season 9 - 11 episodes ---- That is it for now. Visit: http://en.wikipedia.org/wiki/Naruto_episode_guide for more. How many episodes are there in the first season of Dexter?
Oligopoly is a market structure characterized by a small number of relatively large firms that dominate an industry. The market can be dominated by as few as two firms or as many as twenty, and still be considered oligopoly. With fewer than two firms, the industry is monopoly. As the number of firms increase (but with no exact number) oligopoly becomes monopolistic competition.
The model of perfect competition is based on the following assumptions. The industry or market includes a large number of firms (and buyers), so that each individual firm, however large, supplies only a small part of the total quantity offered in the market.