Detailed explanation and options for the selected question.
Which of the following is an example of bioaccumulation?
A.
Mercury building up in fish
B.
Algae growth in polluted waters
C.
Nitrogen fixing in soil
D.
Oxygen depletion in water
Explanation:
Bioaccumulation refers to mercury or similar toxins accumulating in organisms over time. Algae growth, nitrogen fixing, and oxygen depletion are different processes.