How can food be produced and consumed more sustainably and ethically?
Food sustainability and ethics: the environmental impact of food production, sustainable and ethical farming (organic, free-range, Fairtrade), food waste and its reduction, the issues around packaging and food miles, and the role of consumer choice.
A CCEA A-Level Nutrition and Food Science answer on food sustainability and ethics: the environmental impact of food production, sustainable and ethical farming (organic, free-range, Fairtrade), food waste, packaging and food miles, and the role of consumer choice.
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What this dot point is asking
CCEA wants you to discuss food sustainability and ethics: the environmental impact of food production, sustainable and ethical farming (organic, free-range, Fairtrade), food waste and its reduction, the issues around packaging and food miles, and how consumer choice can make food more sustainable.
Environmental impact and ethical farming
Food production uses large amounts of land and water and emits greenhouse gases, especially methane from livestock and carbon dioxide from clearing land and using fertilisers. Intensive farming can cause soil degradation, loss of biodiversity and pollution from fertilisers and pesticides. Food miles (distance travelled), refrigeration and packaging (much of it plastic) add further impact.
Food waste, packaging and consumer choice
CCEA stresses trade-offs: reducing food miles helps, but locally grown out-of-season produce raised in heated greenhouses can have a larger footprint than field-grown food shipped from abroad; organic improves some impacts but may give lower yields. A strong answer weighs these rather than treating any single choice as automatically best.
Examples in context
Example 1. Eating less meat. Livestock farming uses a lot of land and water and produces significant greenhouse gases. A household that has two or three meat-free days a week, using pulses for protein, noticeably lowers its food-related emissions and water use. This is a high-impact, low-cost change, illustrating why diet shift is central to food sustainability.
Example 2. Cutting household food waste. A family that plans meals, stores food correctly, uses leftovers and checks dates throws away far less food. Because wasted food also wastes the energy, water and land used to grow it, this single behaviour change delivers a large environmental benefit, showing waste reduction as a key sustainability strategy.
Try this
Q1. Explain what is meant by sustainable food production. [2 marks]
- Cue. Producing and consuming food in ways that meet present needs without harming the ability of future generations to meet theirs, limiting environmental damage.
Q2. State two ways a consumer can make their food choices more sustainable. [2 marks]
- Cue. Any two of: eat less meat and more plant foods, buy local and seasonal, reduce food waste, avoid excess packaging.
Q3. Explain why reducing food miles does not always reduce environmental impact. [2 marks]
- Cue. Local out-of-season food grown in heated greenhouses or stored with much energy can have a higher footprint than field-grown food shipped from abroad.
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 A2 20198 marksDiscuss the ways in which food production and consumption affect the environment, and evaluate how consumers and producers can make food more sustainable.Show worked answer →
An 8-mark answer needs the environmental impacts and an evaluation of sustainability measures.
Food production affects the environment in many ways. Agriculture uses large amounts of land and water and contributes greenhouse gases, especially from livestock (methane) and from clearing land. Intensive farming can cause soil degradation, loss of biodiversity, and pollution from fertilisers and pesticides. Transporting food over long distances (food miles) and refrigeration add carbon emissions, and packaging creates waste, much of it plastic. Food waste is itself a major impact, because wasted food represents wasted land, water, energy and emissions.
Producers can farm more sustainably by using crop rotation, reducing chemical inputs, improving animal welfare, cutting water use and energy, and reducing waste and packaging. Consumers can choose local and seasonal produce, eat less meat and more plant foods, buy organic, free-range or Fairtrade where it matters to them, reduce their own food waste, and avoid excess packaging.
Evaluation: eating less meat and cutting waste have large benefits and low cost; local food cuts food miles but local out-of-season produce grown in heated greenhouses may have a higher footprint than imported field-grown food; organic improves some impacts but can give lower yields. A strong answer weighs these trade-offs.
Markers reward several environmental impacts, producer and consumer measures, and a balanced evaluation noting trade-offs for the higher marks.
CCEA A2 20214 marksExplain what is meant by food miles, and discuss whether reducing food miles always lowers the environmental impact of food.Show worked answer →
A 4-mark answer needs a definition of food miles and a balanced point about their limits as a measure.
Food miles are the distance food travels from where it is produced to where it is consumed. Long food miles, especially by air freight, add carbon emissions, so reducing them by buying local and seasonal food can lower the environmental impact.
However, food miles are not the whole story. Locally grown produce that is out of season may be grown in heated greenhouses or stored for long periods using a lot of energy, giving a larger footprint than field-grown produce imported by ship. The method of production and transport, not just the distance, determines the true impact, so reducing food miles does not always reduce environmental harm.
Markers reward a correct definition of food miles, the benefit of cutting them, and the key qualification that production method and transport type also matter, so local is not always lower impact.
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Sources & how we know this
- CCEA GCE Nutrition and Food Science specification — CCEA (2016)
- Food and the environment (food waste) — WRAP (2023)