The Lophophore. the Phoronida. The lophophore can most easily be described as a ring of tentacles, but it is often horseshoe-shaped or coiled. Phoronids have their lophophores in plain view, as shown above, but brachiopods like the one below must be opened wide in order to get a good view of their lophophore.
Definition. The effect of aggregate supply and demand in a market environment on the prices of goods and services. Market forces will cause prices to increase when supply decreases or demand increases, whereas prices will fall when demand decreases or supply increases.
competitive forces. Definition. Forces that shape industries and economic sectors, which can be used to determine the competitive strength or weakness of a company. Some competitive forces include the threat of substitute products, the power of customers, the power of suppliers, the potential for new competitors, and the current number of competing firms in the industry.