The big idea: Resource stewardship means managing the planet's resources responsibly, so they are used carefully today and kept available for future generations.
It treats people as guardians of resources, not just consumers of them. A key tool for stewardship is the circular economy — keeping materials in use for as long as possible instead of throwing them away.
Key terms
- Resource stewardship — managing resources responsibly so they last for future generations.
- Circular economy — an economy that reuses, repairs and recycles materials to keep them in use and cut waste.
- Linear economy — the old 'take, make, dispose' model that turns resources into waste.
- Ecological footprint — the area of land and water needed to supply a population's resources and absorb its waste.
Linear vs circular: A linear economy goes take to make to dispose.
A circular economy loops the materials back round — make to use to reuse/repair/recycle — so far less is wasted.
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How a circular economy works
- Designing out waste — products are made to last, and to be easy to repair and take apart.
- Reuse and repair — items are kept in use longer instead of being replaced.
- Recycling materials — old products are broken down so their materials make new ones.
- Renting and sharing — people use a product without owning it (tool libraries, car clubs), so fewer are made.
- Renewable energy and inputs — the loops are powered by clean energy to keep the system sustainable.
IB-style questionExplain[4 marks]
Explain two features of the circular economy, developing each.
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Renewables and the ecological footprint: Switching to renewable energy usually shrinks a nation's ecological footprint, because clean power needs less land to absorb carbon than burning fossil fuels.
But it can also enlarge the footprint in some ways — solar farms and wind turbines take up land, and mining the metals for panels and batteries uses resources too.
Strengthening water security
- Cut leaks and waste — repairing pipes and metering keeps more of the supply usable.
- Recycle and reuse water — treating grey water and wastewater so it can be used again.
- Store and harvest — reservoirs and rainwater harvesting hold water for dry periods.
- Desalination — turning seawater into fresh water (costly and energy-hungry, but reliable).
The Netherlands — circular targets: The Netherlands aims to be a fully circular economy by 2050, halving its use of new raw materials by 2030.
How: it reuses construction materials, recycles plastics and designs products for repair — cutting waste and its reliance on imported resources.
Singapore — recycling water: Water-scarce Singapore boosts water security with NEWater — treating used water to a high standard so it can be used again.
How: recycling water reduces how much it must import, a clear act of resource stewardship.
How this is tested: A sustainable-fashion infographic is a favourite stimulus here — usually a bar chart setting conventional fashion against the circular alternative. Start by Describing what the bars show and Suggesting what they imply for stewardship; the command terms range from Describe and Suggest [2] up to the markband 'To what extent' [10] essay on whether the circular economy is the most effective route.
Read the chart before you argue: the numbers are your evidence.
Read the key first. How many litres does each route use, and what is the difference?
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IB-style questionDescribe[2 marks]
Describe what the chart shows about water use in conventional and circular fashion.
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See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
| Indicator | Conventional fashion | Sustainable / circular fashion |
|---|---|---|
| Water to make one cotton T-shirt (litres) | 2700 | 1000 (recycled fibre) |
| Clothing sent to landfill each year (% of all clothing) | 73 | Less, if reused/recycled |
| Garment worn before disposal (times) | 7 | 30+ (resale, repair, rental) |
| Cost of recycled-fibre garment | Lower | Often higher to buy |
IB-style questionTo what extent[10 marks]
To what extent is the circular economy the most effective route to sustainable resource management?
Model answer plan
See the mark-by-mark plan — for / against / judgement, with marking guidance — in study mode.
Reach the top band: (1) Argue both sides. (2) Use a named example (Netherlands, Singapore). (3) Compare with at least one alternative. (4) End with a clear, supported judgement.