Free IB DP ESS lessons, an IA guide and revision tools.

1.1 Perspectives

• Getting ready for ESSfoundation.1.0
• Values and perspectivesfoundation.1.1
• Environmental worldviewsfoundation.1.2
• Changing perspectivesfoundation.1.3
• The environmental movement: individuals and ideasfoundation.1.4
• The environmental movement: events and agreementsfoundation.1.5

1.2 Systems

• Systems and systems diagramsfoundation.2.1
• The Earth as a systemfoundation.2.2
• Feedback loopsfoundation.2.3
• System resiliencefoundation.2.4
• Finishing offfoundation.2.5
• Sub-unit reviewfoundation.2.6

1.3 Sustainability

• Sustainability, its pillars and collapsefoundation.3.1
• Measuring sustainabilityfoundation.3.2
• Development, justice and the SDGsfoundation.3.3
• Models and their limitsfoundation.3.4

2.1 Individuals, populations, communities, and ecosystems

• Individualsecology.1.1
• Populationsecology.1.2
• Population Sizeecology.1.3
• Population abundanceecology.1.4
• Communities and ecosystemsecology.1.5
• Knowledge of species’ classifications, niche requirements and life cyclesecology.1.6.hlHL
• Understanding the extent of human impactsecology.1.7.hlHL

2.2 Energy and biomass in ecosystems

• Energyecology.2.1
• Energy flowsecology.2.2
• Biomass and food websecology.2.3
• Pollutants, Bioaccumulation and Biomagnificationecology.2.4
• Productivity, Sustainable Yields and Thermodynamicsecology.2.5.hlHL

2.3 Biogeochemical cycles

• A Tour of the Carbon Cycleecology.3.1
• The Carbon Cycle: Systems, Energy and Changeecology.3.2
• Carbon in the Lithosphere, Fossil Fuels and Methaneecology.3.3.hlHL
• The Nitrogen Cycle: From Bacteria to Planetary Boundariesecology.3.4.hlHL

2.4 Climate and biomes

• Climate, Atmospheric Circulation and Biome Distributionecology.4.1
• Biomes: Characteristics, Distribution and Changeecology.4.2
• Climate Types, ENSO and Tropical Cyclonesecology.4.3.hlHL

2.5 Zonation, succession and change in ecosystems

• Zonation and Successionecology.5.1
• Secondary Succession, Changes During Succession and Resilienceecology.5.2
• Factors Influencing Succession, Productivity and Plagioclimaxecology.5.3.hlHL

3.1 Biodiversity and evolution

• Biodiversity and Resiliencebiodiversity.1.1
• Natural Selectionbiodiversity.1.2
• Species diversitybiodiversity.1.3
• Reproductive Isolation and Biodiversity Hotspotsbiodiversity.1.4.hlHL
• Humans and Selectionbiodiversity.1.5.hlHL
• Deep Time and the Anthropocenebiodiversity.1.6.hlHL

3.2 Human impact on biodiversity

• Human Impact on Biodiversity and Invasive Alien Speciesbiodiversity.2.1
• The IUCN Red List and the Tragedy of the Commonsbiodiversity.2.2
• Hotspots, KBAs and the Conservation Conflictbiodiversity.2.3.hlHL
• Indigenous Land, Justice and Biosphere Integritybiodiversity.2.4.hlHL

3.3 Conservation and regeneration

• Why and How We Conservebiodiversity.3.1
• Habitat Conservation and Reserve Designbiodiversity.3.2
• Rewilding, Regeneration and Conservation Choicesbiodiversity.3.3
• The return of the wolf: judging conservation successbiodiversity.3.4.hlHL
• Rewilding Knepp: tipping points, trade-offs and tourismbiodiversity.3.5.hlHL

4.1 Water systems

• Water Systemswater.1.1
• Properties of Water and Carbon Sinkwater.1.2.hlHL
• Stratification and Ocean Circulationwater.1.3.hlHL

4.2 Water access, use and security

• Water Security and Scarcitywater.2.1
• Water Conservation Strategieswater.2.2
• Planetary Boundary and Governancewater.2.3.hlHL
• Water Stress and Industrial Solutionswater.2.4.hlHL

4.3 Aquatic food production systems

• From plankton to platewater.3.1
• Collapse, limits and warming waterswater.3.2
• Rules, reserves and fish farmswater.3.3

4.4 Water pollution

• Water Pollution and Water Qualitywater.4.1
• The lake that turned greenwater.4.2

5.1 Soil

• Soil as a Systemland.1.1
• Flows, Functions and the Soil System Diagramland.1.2
• Texture, Productivity, Carbon and Conserving Soilland.1.3

5.2 Agriculture and food

• Land, Food and Farming Systemsland.2.1
• Intensification, Diets and Food Securityland.2.2

6.1 Introduction to the atmosphere

6.2 Climate change - causes and impacts

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

• Human populationpopulation.1.1
• Managing human populationpopulation.1.2
• The demographic transition modelpopulation.1.3

8.2 Urban systems and urban planning

• Urban areaspopulation.2.1
• Urban planningpopulation.2.2

8.3 Urban air pollution

HL.a Environmental law

• Environmental laws #1hl.a.1HL
• Environmental laws #2hl.a.1HL

HL.b Environmental economics

• Environmental economics #1hl.b.1HL
• Environmental economics #2hl.b.1HL

HL.c Environmental ethics

• Introduction to environmental ethicshl.c.1HL
• Ethical frameworkshl.c.2HL