Topic 1: Foundation
Topic 2: Ecology
Topic 3: Conservation and biodiversity
Topic 4: Water
4.1 Water systems
4.2 Water access, use and security
4.3 Aquatic food production systems
4.4 Water pollution
Topic 5: Land
Topic 6: Atmosphere and climate change
Topic 7: Natural resources
Topic 8: Human populations and urban systems
HL lenses
View a summary cheatsheet for 4.3 Aquatic food production systems
4.3A Phytoplankton and macrophhytes
4.3B Consumption of organisms from freshwater and marine environments
4.3C Maximum sustainable yield
4.3D Impact on freshwater and marine ecosystems
4.3E Productivity, thermal stratification, nutrient mixing, and loading (HL)
4.3F Conservation and Management of Global Fisheries (HL)
4.3G Ethical Issues in Harvesting Seals, Whales, and Dolphins (HL)
