IB ESS — Topic 4.4

Water pollution

Topic 4.4 investigates sources and types of water pollution, including eutrophication, heavy metals, pathogens, and thermal pollution. Students learn to assess water quality using indicator species and chemical tests, and evaluate pollution control strategies.

Sub-topics in Topic 4.4

4.4.1Types and sources of water pollution4.4.2Eutrophication4.4.3Ocean acidification4.4.4Impacts of water pollution4.4.5Water pollution management

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