How Does BOD Relate to Dissolved Oxygen and Result in Fish

question 94

Multiple Choice

How does BOD relate to dissolved oxygen and result in fish kills?

• A)BOD oxygen is a form that fish do not take up through their gills, so fish die when BOD is high.
• B)BODs are organisms that produce toxins that kill fish, dissolved oxygen increases when there are fewer fish using oxygen.
• C)BOD is the amount of oxygen used by microorganisms, when it is high there is not enough oxygen left for fish and they die.
• D)Fish cannot live in BOD sewage and they die, oxygen decreases with fewer fish present

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