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THE VISUAL LEARNING STUDIO
See the idea. Understand the connection.
35 visual explanations across 29 chapters, with topic maps throughout the library.
The chapter index will grow as additional notes are prepared. Chapters shown here are a learning collection, not a claim that the entire exam syllabus is complete.
SEE IT. CONNECT IT. EXPLAIN IT.
Understand the chapter visually
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Study the expanded notes and the credited detailed textbook lessons. The current chapter index covers core topics; it is not a claim of exhaustive coverage of every examination syllabus. Check the official syllabus and primary references.
Pollution — lesson overview
Pollutant and exposure
Pollution involves harmful changes or substances and energy in environmental systems. Risk depends on hazard, exposure, dose and vulnerability.
A primary pollutant is emitted directly; a secondary pollutant forms through environmental reactions. The same location can receive local and transported pollution.
Concentration at one moment and cumulative exposure over time are different quantities.
Air, water and soil
Particulate matter varies in size and composition; smaller particles can penetrate deeper into the respiratory system under relevant exposure conditions.
Water pollution can involve pathogens, nutrients, toxic substances or heat; visible clarity alone does not establish safe water quality.
Soil contamination can affect organisms, crops and groundwater through pathways that depend on chemical properties and environmental conditions.
Prevention and control
Source reduction prevents pollutants being generated; treatment removes or transforms them after generation; exposure reduction addresses contact with people or ecosystems.
Dilution can lower a local concentration without eliminating the total pollutant load. Moving waste elsewhere is not the same as reducing its generation.
Effective control combines monitoring, appropriate technology, enforcement and changes in production or consumption where relevant.
