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.
Circular Flow In a market economy, there are two markets: The factor market, and the product market. In the factor market, the people, who own the factors of production, sell their services to the companies that produce products. In exchange, the companies give the workers wages and, rent, and interest. In the factor market, the people are the sellers, and the companies are the buyers.