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Water Pollution - Coggle Diagram
Water Pollution
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Definition and Overview
Definition: Contamination of water bodies (rivers, lakes, oceans, groundwater) by harmful substances.
Sources: Point source (single, identifiable source) vs. non-point source (diffuse sources)
Types of Water Pollution
Chemical: Pesticides, heavy metals, industrial chemicals
Physical: Sediment from erosion, thermal pollution
Biological: Pathogens (e.g., bacteria, viruses)
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Types of Pollutants
Organic Pollutants
Examples: Sewage, manure, plant debris
Impacts: Increase biological oxygen demand (BOD), causing oxygen depletion.
Inorganic Pollutants
Examples: Heavy metals, nitrates, phosphates.
Impacts: Toxicity, bioaccumulation, eutrophication.
Persistent Pollutants
Examples: DDT, PCBs, plastics
Impacts: Long-term ecological damage, bioaccumulation in food chains
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