Will there be enough food for everyone, and how can we eat more sustainably?
Food security and the sustainability of food, including food waste and how to reduce it, the environmental impact of food, seasonality, and ways consumers can make more sustainable choices.
A focused CCEA GCSE Food and Nutrition answer on food security and sustainability, covering what food security means, food waste and how to reduce it, the environmental impact of food, seasonality, and how consumers can choose more sustainably.
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What this dot point is asking
CCEA wants you to know what food security means, what food waste is and how to reduce it, the environmental impact of food, what seasonality means, and the ways consumers can make more sustainable food choices.
Food security
It can be threatened by climate change and extreme weather, a rising population, poor harvests, conflict and rising costs, all of which can reduce or limit access to food.
Food waste
Environmental impact and seasonality
Food production uses energy, water and land, and transport adds food miles and carbon emissions. Seasonality means eating foods when they are naturally in season locally, which usually means fresher food, lower food miles and less energy-intensive growing (no heated greenhouses or long-distance air freight).
| Sustainable action | Why it helps |
|---|---|
| Buy seasonal and local | Cuts food miles and energy used |
| Reduce food waste | Saves resources and cuts landfill gases |
| Choose less packaging | Reduces plastic and waste |
| Eat more plant-based meals | Meat uses more land, water and energy |
| Choose certified products | Supports sustainable fishing and farming |
Linking to the rest of the course
This topic connects closely to food provenance (where food comes from, food miles), food preservation (which reduces waste), labelling (packaging and origin), and factors affecting food choice (ethical and environmental choices).
Examples in context
- Example 1. Buying strawberries in season
- Local strawberries in summer travel a short distance and need no heated greenhouse, while winter strawberries are often air-freighted from abroad. Choosing seasonal fruit cuts food miles and energy use, a clear sustainability point.
- Example 2. A "use it up" approach to leftovers
- Turning roast chicken into a curry the next day, and vegetable scraps into a soup, saves food, money and the resources used to produce it. This is a practical food-waste reduction strategy.
- Example 3. Eating more plant-based meals
- Replacing some meat with beans, lentils and vegetables lowers the land, water and energy used per meal. Done with protein complementation, it still meets protein needs, linking sustainability back to nutrition.
Try this
Q1. Explain what is meant by food security. [2 marks]
- Cue. Everyone having reliable access to enough safe, affordable and nutritious food to be healthy.
Q2. Give two ways a household can reduce food waste. [2 marks]
- Cue. Plan meals and write a list; use leftovers (also store correctly, freeze, check dates, compost).
Exam-style practice questions
Practice questions written in the style of CCEA exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
CCEA past-style6 marksExplain what is meant by food waste and describe ways a household can reduce it.Show worked answer →
Six marks: define the problem, then give strategies.
Food waste is food that is bought or produced but thrown away rather than eaten. It wastes money and the energy, water and land used to produce the food, and rotting food in landfill releases greenhouse gases.
A household can reduce waste by: planning meals and writing a shopping list so only what is needed is bought; checking use by and best before dates and using food in time; storing food correctly to keep it fresh; using leftovers in new meals; freezing food before it goes off; using up store-cupboard items; and composting unavoidable scraps.
Markers reward a clear definition and several practical, sensible strategies.
CCEA past-style4 marksExplain what food security means and give two ways consumers can eat more sustainably.Show worked answer →
Four marks: definition plus two sustainable choices.
Food security is when everyone has reliable access to enough safe, affordable and nutritious food to be healthy. It can be threatened by climate change, rising population, poor harvests and rising costs.
Sustainable choices: buy seasonal and local food to cut food miles; reduce food waste; choose foods with less packaging; eat less meat or more plant-based meals, as meat production uses more resources; and choose certified sustainable products (such as sustainable fish).
Markers reward a correct definition of food security and two valid sustainable actions.
Related dot points
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