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  • 26-04-2022
  • Biology
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What is the main cause of fish kills in rivers polluted by fertilizers?.

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  • 26-04-2022

Answer:

On warm summer nights during algal blooms, the dissolved-oxygen concentration sometimes drops too low for the fish, and a die-off can occur. This can occur as a result of purely natural conditions or because of human activity that results in adding nutrients, nitrogen and phosphorus, to water systems.

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