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NotesESS HLTopic 5.2Enough food, unevenly shared
Back to ESS HL Topics
5.2.35 min read

Enough food, unevenly shared (ESS HL)

IB Environmental Systems and Societies • Unit 5

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Contents

  • Enough food, unevenly shared, at Higher Level
  • Enough food for eight billion
  • Not shared fairly
  • Food lost and wasted
  • The goal to halve food waste
  • Exam-style question
Enough food, unevenly shared, at Higher Level: Different examples from SL: Brazil's soya, India's grain stores, Nigeria's tomatoes and South Korea's food-waste charges. At HL, ask who can pay for food (economics) and whether it is fair (ethics); food security itself is 5.2.12.

Practise this as you read

  • Explain why hunger continues when there is enough food.
  • Describe how food loss and waste differ between countries.

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Enough food, on paper: The world's farms grow enough food for all eight billion people. Hunger is not mainly a problem of too little food, but of who gets it and how much is lost or wasted.

The points to remember

  • The world produces about 2,900 kcal per person per day; most people need about 2,100-2,500.
  • So there is enough food for everyone, in total.
  • But about a third of crops is fed to farm animals, and some becomes biofuel.
  • At least one-third of all food is lost or wasted.
  • And food goes to people who can pay for it, not always to those who need it.

Example (HL): soya from Brazil. Brazil is the world's biggest soya exporter. Most of the beans are shipped to China and Europe and fed to pigs and chickens, so the calories feed animals before they feed people.

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Food is not equitably distributed. In 2023 about 700 million people, about 1 in 11, were hungry, while over a billion were obese.

Bar chart of the share of people undernourished in 2023: Africa 20.4%, Asia 8.1%, Oceania 7.3%, Latin America and Caribbean 6.2%, Northern America and Europe under 2.5%
One person in five is undernourished in Africa; fewer than 1 in 40 in Europe and North America.

The points to remember

  • Poverty: people who cannot afford food go hungry next to full shops.
  • Conflict: war stops farming and blocks food deliveries.
  • Poor roads and storage: food cannot reach the people who need it.
  • Droughts and floods destroy harvests in the poorest places.
  • Food for sale abroad: land grows crops for export, feed or fuel, not local meals.

Example (HL): India. India grows more grain than it eats and keeps huge stores, yet about 190 million people are undernourished. Since 2023 about 800 million people get free grain each month, because poverty, not a shortage, is the problem.

Food loss happens on farms, in storage and in transport. Food waste happens at the end of the chain.

Bar chart of the share of the world's food lost or wasted: lost on farms, in storage and transport 13%, wasted in shops 2%, in restaurants and canteens 5%, in homes 11%
Together, about a third of all food never gets eaten.

The points to remember

  • Poorer countries lose most food early: pests, no cold storage, heat, poor roads and machinery.
  • Richer countries waste most food late: in shops and homes.
  • Rich households buy too much, misread best-before dates and reject 'ugly' food.
  • Poorer households waste less at home: they buy less, eat cheaper food and eat it all.
  • So say more or less waste, at which stage, and why.
Bar chart of food wasted by consumers per person per year: North America 115 kg, Europe 95 kg, South and South-east Asia 11 kg, sub-Saharan Africa 6 kg
A North American throws away about 20 times as much food as a person in sub-Saharan Africa.

Example (HL): tomatoes in Nigeria. A large share of Nigeria's tomatoes, often put at about 40%, rot before they are eaten, because they are packed in heavy baskets, carried on hot, slow roads and sold without cold storage.

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The UN's Sustainable Development Goals include a target on food waste.

The points to remember

  • SDG 12.3: by 2030, halve food waste per person at shop and consumer level.
  • It also aims to reduce food losses on farms and in the supply chain.
  • Less waste means less land, water and energy used for food no one eats.
  • Wasted food in landfill also releases methane, a greenhouse gas.
Remember it as: Halve the waste by 2030: SDG 12.3.

Example (HL): South Korea. Since 2013 households pay for food waste by weight, using bins that read a card, and almost all food waste is now collected and recycled into animal feed, compost or energy.

How this comes up: Paper 2 can give data on hunger or food waste and ask you to explain why hunger continues [3] or describe a difference between countries [2].
Bar chart of the share of people undernourished in 2023 by region: Africa 20.4%, Asia 8.1%, Oceania 7.3%, Latin America and Caribbean 6.2%, Northern America and Europe under 2.5%
The resource for the question below.
IB-style questionExplain[3 marks]

The world produces enough food to feed everyone. The bar chart shows the share of people who were undernourished in each region in 2023.

Explain why undernourishment continues in some regions although enough food is produced.

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Reports on food systems separate food loss from food waste.

between food loss and food waste.
[2 marks]

Related ESS HL Topics

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5.1.1Soil as a system
5.1.2What soil is made of
5.1.3Soil profiles and horizons
5.1.4Inputs to soil
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5.2.2Land use and marginalized groups
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