CourseCourse QuestionQuestionDocumentDocument

IB Environmental Systems and Societies

Topic 1: Foundation

Topic 2: Ecology

Topic 3: Biodiversity and conservation

4.1 Water systems

4.1.1—Water movement drivers

4.1.2—Hydrological cycle

4.1.3—Hydrological cycle stores

4.1.4—Hydrological cycle flows

4.1.5—Human activity impacts

4.1.6—Water body steady state

4.2 Water access, use and security

4.3 Aquatic food production systems

4.4 Water pollution

Topic 6: Atmosphere and climate change

Topic 7: Natural resources

Topic 8: Human populations and urban systems

IB/ESS/SL//Concept/Topic 4: Water/4.1 Water systems/4.1.2—Hydrological cycle

Topic 4: Water

Syllabus: First assessment 2026
Section: —
Level: SL

Exam analysis

Most tested topics

Water systems
Water access, use and security
Aquatic food production systems
Water pollution