Group 4 · Sciences · 2025 syllabus
IB Environmental Systems & Societies
8
Units
26
Topics
150h
SL hours
240h
HL hours
Foundation
- 1.1
Perspectives
Foundation
- 1.2
Systems
Foundation
- 1.3
Sustainability
Foundation
Ecology
- 2.1
Individuals, populations, communities and ecosystems
Ecology
- 2.2
Energy and biomass in ecosystems
Ecology
- 2.3
Biogeochemical cycles
Ecology
- 2.4
Climate and biomes
Ecology
- 2.5
Zonation, succession and change in ecosystems
Ecology
Biodiversity and conservation
- 3.1
Biodiversity and evolution
Biodiversity and conservation
- 3.2
Human impact on biodiversity
Biodiversity and conservation
- 3.3
Conservation and regeneration
Biodiversity and conservation
Water
- 4.1
Water systems
Water
- 4.2
Aquatic food production systems
Water
- 4.3
Water pollution
Water
Land
- 5.1
Soil
Land
- 5.2
Agriculture and food
Land
Atmosphere and climate change
- 6.1
Introduction to the atmosphere
Atmosphere and climate change
- 6.2
Climate change: causes and impacts
Atmosphere and climate change
- 6.3
Climate change: mitigation and adaptation
Atmosphere and climate change
- 6.4
Stratospheric ozone
Atmosphere and climate change
Natural resources
- 7.1
Natural resources: uses and management
Natural resources
- 7.2
Energy resources
Natural resources
- 7.3
Solid waste
Natural resources
Human systems and resource use
- 8.1
Human populations
Human systems and resource use
- 8.2
Urban systems and urban planning
Human systems and resource use
- 8.3
Urban air pollution
Human systems and resource use
Track your progress through this syllabus
Baccly's interactive checklist lets you tick off all 80 statements as you cover them, then drill each one with matching practice questions. All free.