There are two basic types of metamorphic rocks. Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure.
Image by Picture Taking Fool. Industrial Economics is the study of firms, industries, and markets. It looks at firms of all sizes â from local corner shops to multinational giants such as WalMart or Tesco. And it considers a whole range of industries, such as electricity generation, car production, and restaurants.
economics is the study of the production, distribution and consumption of goods and services. It involves the allocation of productive resources and it is necessary because of scarcity. Scarcity is a relative term, and only means there is more demand than supply of a particular good or service.