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NotesESSUnit 4
IB ESS · Unit 4 of 8

IB ESS Unit 4: Water

Unit 4 of IB Environmental Systems and Societies covers Water. This unit contains 4 topics and 18 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.

4 topics18 sub-topics
ESS FlashcardsExam technique guide

What Unit 4 covers

Unit 4 examines freshwater and marine systems, global water scarcity, aquatic food production, and sources of water pollution. Students learn to evaluate the sustainability of water resource management and aquaculture — topics that frequently appear in IB ESS case study questions.

Topics in Unit 4

4.1

Water systems

4 sub-topics

4.2

Water access, use and security

5 sub-topics

4.3

Aquatic food production systems

4 sub-topics

4.4

Water pollution

5 sub-topics

Study tip: Work through the topics in order — each builds on concepts from the one before. Start with notes, then reinforce with flashcards and practice questions.

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Unit 3Unit 5