IB Geography 3.2.4 Synthesis, Evaluation and Skills Opportunities Notes

Resource Security Is a Ranking Held by a Named Actor at a Named Scale

1. National resource security is measured at state level, so national figures can hide inequalities between households, communities and regions.
2. Two places rank water, food and energy differently because the shortage that binds first is not the same shortage.
3. One figure also carries different meanings at household, city, sub-national, national, regional and global scale.

A Country Ranks the Three Securities in the Order Its Binding Constraint Sets

1. A binding constraint is the shortage that decides the outcome, so relieving any other shortage moves the outcome very little until that one is eased.
2. Egypt puts water first because its renewable water supply per person is near the level that the Falkenmark index defines as absolute scarcity.
3. Canada puts neither water nor energy first, which is why its resource security argument is fought over distribution inside the country rather than over national totals.
4. A ranking is also a claim about timing, because a constraint that binds next winter is managed differently from one that binds in 2061.

Japan Publishes Two Ratios for Food and One for Energy, and All Three Read Low

1. Japan's confirmed fiscal 2024 energy self-sufficiency rate was 16.3 percent, 1.1 percentage points higher than in fiscal 2023.
2. The Energy White Paper 2025 of June 2025 called the rate the lowest in the G7 at the 15.3 percent then reported for fiscal year 2023.
3. That rate is calculated over primary energy supply, while the same report puts roughly 70 percent of electricity generation on fossil fuels, so the two figures answer different questions.
4. Japan's fiscal 2024 food self-sufficiency ratio was 38 percent by calorie supply but 64 percent by production value.
5. Neither ratio is a shortage in itself, because Japan closes both gaps by import, which moves the question from endowment to the reliability of a pathway.
6. Japan's 2025 Basic Plan sets a 2030 target of 45 percent by calorie supply and 53 percent by its new calorie-intake measure.

Singapore Buys Its Water Ceiling From a 1962 Treaty That Runs Out in 2061

1. The 1962 Water Agreement allows Singapore to draw up to 250 million gallons a day from the Johor River until 2061.
2. Total demand runs at about 440 million gallons a day and the Ministry of Sustainability and the Environment expects it to almost double by 2065.
3. An entitlement is a ceiling rather than a delivery, so the treaty figure describes what may be drawn and not what the pipes carried in any given year.
4. Because the city and the state occupy one territory, no province or region sits between the two, though a national average can still hide what a low-income household pays.
5. Five NEWater factories and five desalination plants replace part of Singapore's treaty supply with engineered supply, so water security depends more heavily on energy security.

The European Union Has Moved Part of Its Energy Security to the Regional Scale

1. Eurostat's news item of 18 March 2026 puts the European Union's energy import dependency at 57 percent in 2024, meaning that share of the energy available for use arrived as net imports.
2. The same release ranges member states from Malta at 98 percent to Estonia at 5 percent, so one indicator covers two very different national positions.
3. The Union answers that spread with a common gas storage obligation rather than national targets, a rule the Council describes as safeguarding winter supply for the Union as a whole.
4. The Council agreed on 18 July 2025 to keep the 90 percent storage target while allowing it to be met at any point between 1 October and 1 December, replacing a fixed 1 November deadline.

A National Account Is Kept by a State, While the Actors Inside It Count Differently

The State Counts Volumes at a Border and a Household Counts the Tap

1. Governments
   1. A state keeps its account at its own borders, which is why its instruments are strategic reserves, tariffs, treaties and import diversification.
2. Urban consumers
   1. A city household experiences security as continuity of service and the price on the bill, so a tariff rise registers as insecurity even where supply has not moved.

A Data Centre and a Later Generation Both Draw on the Same National Account

1. Firms
   1. The IEA estimates that data centres used 415 TWh in 2024, about 1.5 percent of world electricity, and could use 945 TWh by 2030.
2. Future generations
   1. The United States Geological Survey reports the High Plains aquifer down by an area-weighted average of 16.5 feet, about 5 metres, from predevelopment to 2019, in Scientific Investigations Report 2023-5143.
   2. Recoverable water in storage fell by about 286.4 million acre-feet over the same span, roughly 353 cubic kilometres, which is a store being spent rather than a flux being used.

Communities Inside a Secure State and Neighbours Outside It

1. Indigenous communities
   1. Indigenous Services Canada recorded 40 long-term drinking water advisories in force on public systems on reserve across 38 communities as at 13 August 2026, with 156 lifted since November 2015.
   2. Canada has the world's third-largest renewable freshwater supply by national volume, so long-term drinking-water advisories measure delivery and governance rather than national endowment.
   3. First Nations identified rights, source-water protection and predictable funding as concerns shaping Canada's Bill C-37, introduced in June 2026.
2. Downstream states
   1. A downstream government defines its own security against an upstream decision it does not control, which is why Mexico's 1.5 million acre-feet rests on the 1944 treaty text rather than on the state of the river.

A Figure Collected at One Scale Cannot Settle a Question Asked at Another

1. Scale is one of the two organizing concepts of this course, and this row is where it decides an answer rather than only describing one.
2. A national figure is an aggregate, so it can rise while the distribution inside it worsens.
3. Canada's C$100.3 billion of agriculture and agri-food exports in 2024 coexisted with 24.0 percent of people living in a food-insecure household in 2025, showing one country measured at two scales.
4. That household rate reached 56.4 percent in Nunavut, so the sub-national scale separates two populations a national export total merges.
5. From 21 November 2026, the European Union will ban plastic-waste exports to non-OECD countries, shifting part of the disposal burden back to exporters.

Canada's Aggregate Hydropower Share Says Nothing About a Territory With No Grid at All

1. Canada drew 55.2 percent of its electricity from hydropower in 2024, but this national aggregate hides places with no connection to the main grid.
2. The Canada Energy Regulator's Nunavut profile records that almost all of the territory's electricity is generated from diesel fuel imported during the summer and stored for year-round use.
3. On the same profile, last updated on 26 March 2026, Qulliq Energy Corporation operates 25 diesel plants in 25 communities linked by neither roads nor power lines.
4. The same profile records no regional or territorial grid and no back-up grid, so a community that loses its plant has no import to call on.
5. The North American Electric Reliability Corporation describes a reference margin level as the reserve margin target that represents the accepted level of risk based on a probability-based loss-of-load analysis.
6. NERC's 2025 assessment places MISO, PJM, Texas RE-ERCOT, WECC-Basin and WECC-Northwest at high risk within five years.

One River Is Divided Between States Before It Is Divided Between Countries

1. The Colorado River Compact of 1922 apportioned 7.5 million acre-feet a year, about 9.3 cubic kilometres, to the Upper Basin and the same again to the Lower Basin.
2. The Upper Basin is Colorado, New Mexico, Utah, Wyoming and part of Arizona, while the Lower Basin is Arizona, California and Nevada, so the first argument about this river runs between states inside one country.
3. The 1944 treaty with Mexico allots a further 1.5 million acre-feet a year, about 1.85 cubic kilometres, which puts a second scale on the same flow.
4. The 2007 Interim Guidelines governing Lake Powell and Lake Mead expire at the end of 2026, along with the 2019 drought contingency plans.
5. The Department of the Interior issued a Record of Decision on 21 August 2026 adopting a decision framework for 2027 to 2036 together with operating guidelines for 2027 and 2028 only.
6. The Bureau of Reclamation's own account of that process records that consensus on long-term operations was not reached.

Above the State Sit Commons That No National Account Can Close

1. The BBNJ Agreement, adopted on 19 June 2023 under the United Nations Convention on the Law of the Sea, entered into force on 17 January 2026 after the sixtieth ratification was deposited on 19 September 2025.
2. It governs areas beyond national jurisdiction, which UN News in September 2025 put at two thirds of the world's ocean area, so its subject is the space no national resource account reaches.
3. The atmosphere behaves the same way, because a tonne of carbon dioxide has the same effect wherever it is released while every national inventory assigns it to one territory.

Every Security Threshold Encodes a Judgement About What Counts

1. A threshold turns a continuous quantity into a category, so where the line falls decides which places are counted as insecure.
2. Two defensible thresholds can therefore put one country on opposite sides of the same question.

Water and Food Thresholds Count National Annual Totals

1. The Falkenmark index
   1. Falkenmark, Lundqvist and Widstrand set out a water scarcity measure in Natural Resources Forum in 1989, built on how many people share a unit of river flow.
   2. It is conventionally quoted as three thresholds per person a year, 1,700 cubic metres for stress, 1,000 for scarcity and 500 for absolute scarcity.
   3. Because it counts an annual national volume, it cannot see season, quality, or who inside the country actually receives the water.
2. Self-sufficiency ratios
   1. Japan's two food ratios for one year show the weighting doing the work, at 38 percent by calories against 64 percent by production value.

Energy and Footprint Measures Count Shares and Hectares

1. Import dependence ratios
   1. A dependency rate reports the share of energy arriving as net imports and says nothing about the number of suppliers behind it.
2. Footprint accounts
   1. Ecological-footprint accounts convert demand into global hectares, but freshwater use is not assigned a global-hectare value and therefore sits outside the measure.

Choosing a Technique That Shows the Scale You Are Arguing About

1. A choropleth map shades one value per administrative unit, so a national choropleth cannot show a shortage confined to one territory inside a country.
2. Redrawing the same indicator at sub-national scale is what makes a case like Nunavut visible, which is a cartographic decision with an argumentative consequence.
3. A flow-line map carries volume in the width of the line, which suits a transboundary allocation such as the Colorado apportionment.
4. A Lorenz curve and its Gini coefficient describe concentration, so they answer the distribution question a national total cannot.