There is mass mortality of fishes in a pond. | vedclass

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(D) The mass mortality of fishes in a pond can be attributed to several environmental factors:$(i)$ Thermal pollution: An increase in water temperatur

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(D) The mass mortality of fishes in a pond can be attributed to several environmental factors:$(i)$ Thermal pollution: An increase in water temperature reduces the concentration of dissolved oxygen,leading to suffocation.$(ii)$ Addition of poisonous compounds: Toxic substances like mercury or pesticides can cause direct poisoning of aquatic life.$(iii)$ Blockage of gills: Suspended pollutants or oil spills can physically block the gills,preventing respiration and leading to death.

There is mass mortality of fishes in a pond. What may be the reasons?

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