IB Geography F.4.2 Contemporary Approaches to Food Production Notes

Genetic Modification Changes Traits, Not the Whole Food System

1. Genetically modified organisms contain genetic material altered through biotechnology to express selected traits.
2. A crop may be engineered for insect resistance, herbicide tolerance, drought tolerance or higher micronutrient content.
3. Insect-resistant crops can reduce crop losses and pesticide spraying where the target pest is important and resistance is managed.
4. Drought tolerance can stabilise yields under water stress, but it does not eliminate the need for soil, water and risk management.
5. Biofortification can increase the micronutrient content of a staple, yet health gains still depend on adoption, access and the rest of the diet.
6. Yield effects vary by crop, trait, climate and farming practice, so genetic modification should not be treated as an automatic yield increase.

GM Crops Redistribute Environmental and Economic Risk

1. Herbicide-tolerant systems can simplify weed control, but repeated use of one herbicide selects for resistant weeds.
2. Insect-resistant crops can reduce insecticide use, but refuge strategies and monitoring are needed to slow pest resistance.
3. Large areas planted with one variety can reduce crop diversity and increase exposure to a shared pest or climate shock.
4. Patented seed and linked input packages may concentrate control in biotechnology firms and raise recurring costs for farmers.
5. Farmers may gain a more reliable harvest while losing the ability to save seed or switch suppliers easily.
6. Export markets or consumers that reject a GM crop can reduce its commercial value even when it performs well agronomically.
7. Regulation must therefore assess environmental release, food safety, labelling, farmer choice and market access separately.
8. The impact map helps evaluate GM crops as a system whose results depend on traits, farm management and land-use responses.

Vertical Farming Exchanges Land and Water for Capital and Energy

1. Vertical farming grows crops in stacked layers under controlled conditions, often using hydroponics and artificial lighting.
2. Stacking produces a high annual output per square metre and allows farms to occupy warehouses or other urban sites.
3. Recirculating water can reduce water use, while enclosed production can limit pesticides and exposure to drought or storms.
4. Location near consumers can shorten delivery time for perishable produce and reduce spoilage.
5. Lighting, temperature control and pumping create high electricity demand, so emissions depend strongly on the energy source.
6. Capital, skilled maintenance and reliable power make the model difficult to operate where finance and infrastructure are weak.
7. The system is best suited to high-value leafy greens and herbs rather than calorie staples such as wheat, maize or rice.

Cultivated Meat Could Reduce Livestock Pressure but Remains Emerging

1. Cultivated meat grows animal cells in a controlled production system rather than raising and slaughtering a whole animal.
2. Its potential benefits include lower land demand, less livestock methane and reduced exposure to some animal-welfare and disease risks.
3. Water and land requirements may be lower than for conventional livestock, although results depend on the production process and energy mix.
4. Sterile facilities, growth media, bioreactors and purification make present production technically demanding and costly.
5. High electricity demand can offset part of the climate benefit where power remains carbon intensive.
6. Regulatory approval exists in only a small number of markets, while consumer acceptance and production at mass scale remain uncertain.
7. The product addresses demand for animal protein more directly than hunger caused by poverty, conflict or weak staple supply.
8. The production sequence clarifies how cultivated meat grows animal cells without raising a whole animal.

The Three Approaches Solve Different Constraints

1. GM crops can affect staple production in existing fields and therefore have the widest direct relevance to food-insecure farming regions.
2. Vertical farms can supply fresh produce near affluent urban markets but are poorly matched to low-cost staple production.
3. Cultivated meat could reduce some livestock impacts but currently depends on advanced industrial infrastructure and consumer demand.
4. None of the approaches guarantees access because food can remain unaffordable or physically blocked even when production rises.
5. Each approach shifts rather than removes resource use, replacing some land, water or animal inputs with energy, capital, patents or technical control.
6. The strongest comparison judges suitability for a named place, crop or consumer group instead of ranking technologies in the abstract.

Governance Determines Who Receives the Benefit

1. Public research and open licensing can reduce dependence on a small number of seed or technology firms.
2. Subsidies can widen access, but they may also direct public money toward capital-intensive systems with little effect on vulnerable households.
3. Labelling and transparent safety assessment allow consumers to make informed choices and strengthen trust.
4. Energy pricing and renewable electricity shape whether controlled-environment food has a lower environmental footprint.
5. Support for traditional crops and seed diversity can prevent innovation from narrowing the genetic base of the food system.
6. Technology improves food security only when ownership, infrastructure, affordability and environmental management align with the production gain.