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Food

Food security and insecurity: patterns, causes and impacts

  • 3 things to know
  • Paper 2 section C

Overview

Food security, insecurity, surplus and deficit, the global pattern of calorie intake, why consumption rises, how climate, technology, pests, water stress, conflict and poverty affect supply, and famine, undernutrition, soil erosion, rising prices and unrest.

What you need to know

Answer each one before you reveal it.

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Key term

What is food security?

Key term

What is an area of food surplus, and what is an area of food deficit?

Key term

Describe the global pattern of calorie intake per person.

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is food security?

    Model answer

    When people have reliable access at all times to enough safe and nutritious food to stay healthy and active.

  2. 2

    What is food insecurity?

    Model answer

    When people cannot obtain enough safe and nutritious food to meet their needs, either all of the time or at certain times of the year.

  3. 3

    What is an area of food surplus, and what is an area of food deficit?

    Model answer

    A surplus area grows more food than its population needs and has some left to store or export, while a deficit area grows less than it needs and must import food or go short.

  4. 4

    What does calorie intake per person measure, and why is it useful?

    Model answer

    The average amount of food energy available to each person each day, which allows countries to be compared for whether their food supply meets people's needs.

  5. 5

    Describe the global pattern of calorie intake per person.

    Model answer

    Intake is highest in the wealthier developed regions such as North America, Europe and Australasia, and lowest in poorer regions, particularly sub-Saharan Africa and parts of southern Asia.

  6. 6

    How does economic development raise the amount of food a country consumes?

    Model answer

    Rising incomes let people afford more food and change their diet towards meat and dairy, which need far more land, grain and water to produce.

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