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.
Keynesian economics emphasizes the role of demand in an economy. According to Keynes, the main cause of unemployment is low consumer demand for goods and services. Excessive consumer demand for products and services creates inflation.eynesian economics emphasizes the role of demand in an economy. According to Keynes, the main cause of unemployment is low consumer demand for goods and services. Excessive consumer demand for products and services creates inflation.