Exhibit 2-9 Refer to Exhibit 2-9

question 85

Multiple Choice

Exhibit 2-9 Refer to Exhibit 2-9. If Alex and Adam each specialize in the good in which he has a comparative advantage and then engage in trade, ____________________ can consume a combination of goods that lies beyond their PPF.

• A)Alex, but not Adam,
• B)Adam, but not Alex
• C)Alex and Adam
• D)neither Alex nor Adam

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Definitions:

Rapidly Growing Populations

Refers to populations that increase in number at a rapid rate over a short period of time, often due to high birth rates and low mortality rates.

Type III Survivorship Curve

A graph showing a pattern where most individuals die young, with only a few surviving to advanced age, typical of many invertebrates and plants.

Sea Urchins

Marine invertebrates with spiny shells, belonging to the class Echinoidea.

Density-Dependent Factor

An ecological factor whose effects on a population vary according to the population density, such as disease or competition.