Unit 4 of IB Environmental Systems and Societies covers Water. This unit contains 4 topics and 66 sub-topics. Below you'll find free study notes, flashcards, and exam preparation resources for every topic in this unit.
Higher Level students should treat this unit page as a route map: revise the shared core, then use the HL notes and topic links to reach the extra depth and evaluation expected at HL.
HL Unit 4 extends water systems with quantitative water quality analysis, BOD calculations, and more complex evaluation of aquatic food production and water management strategies. HL students must demonstrate greater analytical depth when assessing water resource challenges.
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