A few days ago
How does the phosphorus and nitrogen affect the local freshwater system?
Example: a factory releases phosphorus and nitrogen into the local freshwater system, while carbon dioxide and sulfure dioxide is released into the air currents. How would this affect the freshwater, grassland, and the city?
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A few days ago
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In freshwater or estuarine systems close to land, nitrate can reach high levels that can potentially cause the death of fish. While nitrate is much less toxic than ammonia or nitrite[3], levels over 30 ppm of nitrate can inhibit growth, impair the immune system and cause stress in some aquatic species[citation needed]. In most cases of excess nitrate concentrations, the principle pathway of entering aquatic systems is through surface runoff from agricultural or landscaped areas which have received excess nitrate fertilizer.
Surface runoff of phosphates from excessively fertilized farmland can be a cause of phosphate pollution leading to eutrophication (nutrient enrichment), algal bloom and consequent oxygen deficit. This can lead to anoxia for fish and other aquatic organisms in the same manner as phosphate-based detergents.
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