Economics Is Called an Empirical Science Because

question 212

Multiple Choice

Economics is called an empirical science because

• A)economists study real-world evidence to test their models.
• B)economists use assumptions in their models.
• C)economic models have no predictive power.
• D)economic analysis is only useful in a capitalistic society.

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Definitions:

Pyramid of Biomass

A depiction of the decreasing mass of organisms found as one ascends through the food chain.

Pyramid of Energy

A graphical representation that shows the flow of energy at different trophic levels in an ecosystem, with the largest amount of energy at the base and decreasing amounts as you move up.

Pyramid of Numbers

A graphical representation that shows the number of organisms at each trophic level in an ecosystem.

Biological Magnification

The increased concentration of toxic chemicals, such as PCBs, heavy metals, and certain pesticides, in the tissues of organisms at higher trophic levels in food webs.