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IB ESS HL.b Environmental Economics Question Bank

IB ESS HL.b Environmental Economics Question Bank
IB Environmental systems and societies guide, first assessment 2026First assessment 2026

Practise evaluating whether natural systems should receive monetary values by weighing decision-making benefits against subjective cultural, aesthetic and intrinsic values.

Exam points

  • evaluate monetary valuation by weighing decision-useful comparisons against intrinsic and cultural values

Question 8

[Maximum number: 1]

Figure 7(a): Fact file on energy and economic development in Brazil
- Brazil has experienced fast economic growth and is one of the most influential nations in South America.
- Major industries include mining, agriculture and the manufacture of products ranging from motor vehicles and aircraft to computers.
- There has been significant growth in the service industries including the telecommunications, banking, commerce and computing sectors.
- Over 80%80 \% of Brazil's gross domestic product (GDP) is generated in the Atlantic Rainforest region.
- Brazil is a major producer of oil. However about 70%70 \% of its electricity comes from hydroelectric power (HEP).
- Brazil is also the largest global producer of bioethanol, a biofuel produced from plants such as sugar cane. Over 40%40 \% of petrol (gasoline) use has been replaced by bioethanol.
- Brazil's energy policy has involved:
- improving energy efficiency.
- increasing energy production from renewable sources.
- diversification of energy sources.
[Sources: adapted from www.economywatch.com, www.nature.org, http://sugarcane.org and www.reegle.info]

Figure 7(b): GDP, energy use, life expectancy and under 5 mortality rate in Brazil from 1990 to 2012

This graph is marked in the local booklet OCR/PDF as removed for copyright reasons, so the local booklet does not contain the data needed to calculate the average annual GDP increase.

With reference to Figure 7(b), estimate the average annual increase in gross domestic product (GDP) between 1990 and 2012.

Question 4(c)(ii)

[Maximum number: 2]

Explain whether or not you believe it is justified to place an economic value on natural systems.