ENVIRONMENTAL ECONOMICS
COMPREHENSIVE EXAMINATION TEST
2026 PRACTICE SOLUTION QUESTIONS
AND ANSWERS GRADED A+
●● How does positive economics differ from normative economics?
Answer: It focuses on cause-and-effect relationships
●● Why is pollution considered a market failure? Answer: External costs
are excluded from market prices
●● What happens to market prices when firms ignore pollution
damages? Answer: They are too low
●● What is required to internalize an externality? Answer: Polluters
must face the full social cost of their actions
●● How does an emissions tax primarily reduce pollution? Answer: By
increasing marginal production costs
●● What does a cap-and-trade system control? Answer: Total emissions
, ●● What does benefit-cost analysis help policymakers do? Answer:
Compare alternative environmental policies
●● Why are environmental benefits difficult to measure? Answer: Many
are nonmarket in nature
●● What mainly causes international environmental problems? Answer:
Pollutants cross national borders
●● What does natural resource economics focus on? Answer: Resource
extraction and management
●● What does sustainability require from current actions? Answer: Not
to reduce future opportunities
●● How does Green GDP improve measurement? Answer: By
accounting for environmental degradation
●● What are residuals best described as? Answer: Waste from
production and consumption
●● What does the law of conservation of matter imply? Answer: Inputs
eventually become residuals
COMPREHENSIVE EXAMINATION TEST
2026 PRACTICE SOLUTION QUESTIONS
AND ANSWERS GRADED A+
●● How does positive economics differ from normative economics?
Answer: It focuses on cause-and-effect relationships
●● Why is pollution considered a market failure? Answer: External costs
are excluded from market prices
●● What happens to market prices when firms ignore pollution
damages? Answer: They are too low
●● What is required to internalize an externality? Answer: Polluters
must face the full social cost of their actions
●● How does an emissions tax primarily reduce pollution? Answer: By
increasing marginal production costs
●● What does a cap-and-trade system control? Answer: Total emissions
, ●● What does benefit-cost analysis help policymakers do? Answer:
Compare alternative environmental policies
●● Why are environmental benefits difficult to measure? Answer: Many
are nonmarket in nature
●● What mainly causes international environmental problems? Answer:
Pollutants cross national borders
●● What does natural resource economics focus on? Answer: Resource
extraction and management
●● What does sustainability require from current actions? Answer: Not
to reduce future opportunities
●● How does Green GDP improve measurement? Answer: By
accounting for environmental degradation
●● What are residuals best described as? Answer: Waste from
production and consumption
●● What does the law of conservation of matter imply? Answer: Inputs
eventually become residuals
