Figure 9-4 -Refer to Figure 9-4.The Increase in Total Surplus Resulting from Total

question 155

Multiple Choice

Figure 9-4

-Refer to Figure 9-4.The increase in total surplus resulting from trade is

• A)$60, since producer surplus increases by $180 and consumer surplus falls by $240.
• B)$60, since consumer surplus increases by $180 and producer surplus falls by $240.
• C)$75, since consumer surplus increases by $240 and producer surplus falls by $165.
• D)$75, since consumer surplus increases by $300 and producer surplus falls by $225.

Comprehend the ecological and evolutionary implications of cooperative breeding and helping behavior in animal societies.

Relate concepts of life span, reproductive span, and breeding systems to the evolution of social behaviors in animals.

Explain the factors influencing reproductive strategies, including territory inheritance and the establishment of nests.

Describe the significance of extending the reproductive phase and its evolutionary advantages as supported by the grandmother hypothesis.