Which of the following would be considered an example of bioremediation?
A) adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability
B) using a bulldozer to regrade a strip mine
C) dredging a river bottom to remove contaminated sediments
D) adding fertilizer to soil poor in nutrients to increase plant growth

Question

Quizplus · Accepted Answer

Bioremediation involves the use of microorganisms to remove or neutralize pollutants from an environment. Adding nitrogen-fixing microorganisms to a degraded ecosystem to increase nitrogen availability is an example of bioremediation.

Option B involves physical manipulation of the landform, while option C involves physical removal of contaminated sediments. Option D involves the addition of inorganic nutrients to soil, which is not considered bioremediation.

Which of the Following Would Be Considered an Example of Bioremediation