IB ESS HL 2.3.25 Hl Global Collaboration Needed Topic Practice

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ConceptConcept DocsDocuments

IB Environmental Systems and Societies

Topic 1: Foundation

Topic 2: Ecology

2.1 Individuals, populations, communities, and ecosystems

2.2 Energy and biomass in ecosystems

2.3 Biogeochemical cycles

2.3.1—Biogeochemical cycles purpose

2.3.2—Cycle components

2.3.3—Carbon stores

2.3.4—Carbon flows

2.3.5—Carbon sequestration

2.3.6—Ecosystems as carbon stores/sinks/sources

2.3.7—Fossil fuels as carbon stores

2.3.8—Agriculture as carbon store/source/sink

2.3.9—Ocean carbon exchange

2.3.10—Ocean acidification

2.3.11—Alleviating carbon cycle impacts

2.3.12 (HL)—Lithosphere carbon stores

2.3.13 (HL)—Carbonate fossilization

2.3.14 (HL)—Fossil fuel formation

2.3.15 (HL)—Methane production

2.3.16 (HL)—Methane cycle

2.3.17 (HL)—Nitrogen cycle stores

2.3.18 (HL)—Bacterial roles in nitrogen cycle

2.3.19 (HL)—Denitrification conditions

2.3.20 (HL)—Plant nitrogen fixation

2.3.21 (HL)—Nitrogen cycle flows

2.3.22 (HL)—Human impacts on nitrogen cycle

2.3.23 (HL)—Haber process

2.3.24 (HL)—Nitrogen planetary boundary

2.3.25 (HL)—Global collaboration needed

2.4 Climate and biomes

2.5 Zonation, succession and change

Topic 3: Biodiversity and conservation

Topic 6: Atmosphere and climate change

Topic 7: Natural resources

Topic 8: Human populations and urban systems

IB/ESS/HL//Question Bank/Topic 2: Ecology/2.3 Biogeochemical cycles/2.3.25 (HL)—Global collaboration needed

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