Which of the Following Statements Correctly Describes the Relationship Between

question 22

Multiple Choice

Which of the following statements correctly describes the relationship between biochemical oxygen demand (BOD) ,heterotrophic bacteria,and fish?

• A) The presence of fish increases the number of heterotrophic bacteria in an area, which decreases the BOD.
• B) Increases in the number of heterotrophic bacteria decrease the BOD, which decreases the number of fish.
• C) The BOD of a marine environment is independent of populations of heterotrophic bacteria and fish.
• D) Heterotrophic bacteria generate oxygen, which increases the BOD and increases the number of fish.

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