Figure 18-3 -Refer to Figure 18-3. Suppose That the Price of the Price

question 380

Multiple Choice

Figure 18-3
-Refer to Figure 18-3. Suppose that the price of the output is $20. What is the value of the marginal product of the third worker?

• A)$2
• B)$10
• C)$40
• D)$280

---

Definitions:

Trophic Levels

The hierarchical levels in an ecosystem, determined by the feeding position of organisms in food chains.

Energy Loss

The reduction in energy as it moves through the trophic levels of an ecosystem; often described in the context of the inefficiency of energy transfer between levels.

Tertiary Consumers

Carnivores that eat secondary consumers; they are often apex predators in their ecosystems.

Secondary Consumers

Organisms that feed on primary consumers in an ecosystem; they are typically carnivores or omnivores.