Recruitment (R) 15 15 10 10 5 0 10 20 30 40 50 50 Biomass (Fish) 60 60 70 70 75 80 85 In Figure 1, at what point does the fish population reach maximum sustainable yield? population of fish that this pond can handle? 신 A/ A What is the maximum Given the biological recruitment curve in Figure 1, what will be the fish population in the pond at the end of Year 2 if the initial fish population equals 75 fish and 30 fish are harvested at the end of year 1 and year 2? 40 A

(2.3) You are part of a sustainability consulting team tasked with evaluating the feasibility of retrofitting an old office building to achieve net-zero energy status. The goal is to reduce the building's carbon footprint to zero by enhancing its energy efficiency and installing renewable energy systems. Your task is to calculate the Benefit-Cost Ratio (BCR) of this retrofitting project to assess its financial viability. You know the following information about this project: Total cost of retrofitting measures: $800,000, including: High-efficiency HVAC system: $250,000 • Window upgrades: $150,000 Thermal insulation: $200,000 Solar PV system: $200,000 Grants and subsidies for green retrofitting: $100,000 Expected annual energy cost savings: $75,000 Additional annual savings (maintenance, etc.): $20,000 Expected lifespan of retrofitting measures: 25 years Time value of money rate: 7% Show your calculation process about BCR for the cost analysis.

Which of the following statements about point E is TRUE?

Feasibility frontiers are typically drawn downward sloping and concave to the point of origin as depicted in the figure below: 100 90 80 70 60 50 40 30 20 10 24 Hours of free time per day Why do feasibility frontiers have this shape? Why can't feasible frontiers be convex? Can feasibility frontiers be a straight line instead of a curve? Why/why not? Final grade