Occurs when human activities (like power plant cooling) raise water temperature, which holds less dissolved oxygen.
Excess nitrogen and phosphorus (often from fertilizers) lead to eutrophication . This causes algal blooms, which deplete oxygen and create "dead zones." 14.3 water pollution answer key
Why is thermal pollution considered a pollutant even though heat is natural? A4: Because an unnatural, rapid increase in water temperature changes the ecosystem: it reduces dissolved oxygen capacity, increases metabolic rates (fish need more O2 but have less), and can kill species adapted to cold water. Occurs when human activities (like power plant cooling)
Pathogens (bacteria and viruses) from human or animal waste. 3. Groundwater and Ocean Pollution 14.3 water pollution answer key
Sets standards for the quality of tap water.
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