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IB DP ESS — Topic 7: Natural Resources | SL & HL | Paper 1 & Paper 2
🎯 Learning Intentions By the end of this note, you will be able to:
- Define resource security, resource management, and the distinction between renewable, non-renewable, and replenishable resources using IB-aligned ESS terminology.
- Explain how resource depletion, population growth, and consumption patterns interact as a system to create resource insecurity at local, regional, and global scales.
- Describe the key strategies used in resource management — including conservation, substitution, efficiency improvements, and circular economy approaches — and the conditions under which each is most effective.
- Analyse the concept of the tragedy of the commons using real-world examples, applying ESS analysis parameters including scale, perspectives, sustainability, and trade-offs.
- Evaluate the effectiveness of different governance approaches — open access, common property, private property, and state control — in achieving sustainable resource management.
- Discuss contrasting ecocentric, technocentric, and anthropocentric worldviews in relation to resource use, scarcity, and the ethics of intergenerational equity.
- Analyse the concept of ecological footprint and planetary boundaries as frameworks for assessing human resource demand relative to Earth's biocapacity.
Real-World Context & Relevance
In August 2023, the Global Footprint Network calculated that humanity had consumed the equivalent of Earth's entire annual biological resource budget by 2 August — a date known as Earth Overshoot Day. This means that for the remaining five months of 2023, humanity was drawing down ecological reserves accumulated over millennia, depleting fisheries, exhausting groundwater aquifers, and emitting carbon faster than forests could absorb it. In 1970, Earth Overshoot Day fell in late December; the fact that it now arrives in early August reflects a near-doubling of humanity's resource demand relative to the planet's regenerative capacity in just five decades (Global Footprint Network).
This trajectory is not uniform. A resident of the United States requires the equivalent of approximately 5 Earths to sustain their lifestyle if everyone lived the same way, while a resident of India requires less than 0.8 Earths. This disparity — between high-consumption economies in the Global North and lower-consumption economies in the Global South — sits at the heart of the resource management challenge. It raises profound questions about who has the right to use resources, who bears the costs of depletion, and what governance systems can prevent the collapse of the natural systems that underpin all human economies.
🌍 Why This Matters Resource security — the reliable access to sufficient natural resources to meet human needs — is increasingly threatened by overconsumption, inequitable distribution, and the degradation of the ecological systems that produce those resources. Understanding how resources are managed, who controls them, and how governance systems succeed or fail is essential for designing sustainable futures and for evaluating real-world environmental policy.
Core Concepts & Definitions
Before we can evaluate how resources should be managed, we need to understand what kind of resource we are dealing with. Not all natural resources behave the same way when exploited. Some can regenerate within human timescales; others cannot. This distinction fundamentally shapes what management strategies are viable and what the consequences of overuse will be.
📖 Key Definition — Resource Classification A renewable resource is one that is replenished by natural processes at a rate comparable to or faster than the rate of human use (e.g. solar energy,