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.
Video: Economic Systems: Definition, Types & Examples. In this lesson, you'll learn about the three major forms of economic systems, including planned, market, and mixed market economies. You'll also explore the five factors of production and what roles they play in the exchange of products or services. Economic Systems: Definition, Types & Examples.