A nuclear stress test is similar to the exercise stress test or pharmacological (chemical) stress test, but a small amount of radioactive substance is used to determine the health of the heart and blood flow to the heart.
The following are the four basic types of economics resources: Land â natural resources such as iron ore, gold, diamonds, oil, etc. Labor â human resources such as wage-earning workers. Capital â plants and equipment used in the production of final goods, such as assembly lines, trucks, heavy duty machinery, factories, etc.
The Four Types of Economic Systems 1. Economic Systems The Four Types 2. The Four Types of Economic Systems Four very different types of Economic Systems have evolved as different societies have placed different emphasis on different goals and priorities in their efforts to answer the Three Key Economic Question. 3.