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1.1 Perspectives

1.2 Systems

1.3 Sustainability

2.1 Individuals, populations, communities and ecosystems

2.2 Energy and biomass in ecosystems

2.3 Biogeochemical cycles

2.4 Climate and biomes

2.5 Zonation, succession and change in ecosystems

3.1 Biodiversity and evolution

3.2 Human impact on biodiversity

3.3 Conservation and regeneration

4.1 Water systems

4.2 Water access, use and security

4.3 Aquatic food production systems

4.4 Water pollution

5.1 Soil

5.2 Agriculture and food

6.1 Introduction to the atmosphere

6.2 Climate change - causes and impact

6.3 Climate change - mitigation and adaptation

6.4 Stratospheric ozone

7.1 Natural resources - uses and management

7.2 Energy sources - uses and management

7.3 Solid waste

8.1 Human populations

8.2 Urban systems and urban planning

8.3 Urban air pollution

HL.a Environmental law

HL.b Environmental economics

HL.c Environmental ethics

IB Environmental systems and societies 5.2I Uneven Distribution of Food Key Definitions

Definition

Food insecurity

A lack of reliable access to enough safe, nutritious food to meet dietary needs, caused by problems of availability, affordability, or distribution rather than by a global shortage of calories.

Definition

Malnutrition

Malnutrition is the condition of having an inadequate or unbalanced diet, including both insufficient intake (undernourishment) and excessive intake (overnourishment).

IB Environmental systems and societies 5.2I Uneven Distribution of Food Key Definitions

Definition

Food insecurity

A lack of reliable access to enough safe, nutritious food to meet dietary needs, caused by problems of availability, affordability, or distribution rather than by a global shortage of calories.

Definition

Malnutrition

Malnutrition is the condition of having an inadequate or unbalanced diet, including both insufficient intake (undernourishment) and excessive intake (overnourishment).