Which of the following is an example of bioremediation?

• A. Using oil-degrading bacteria to clean up an oil spill.
• B. Microorganisms in soil providing usable Nitrogen to plants.
• C. Using bacteria in a laboratory to create human proteins and hormones, such as insulin.
• D. All of the above.

Answer: (A)

Verified step by step guidance

1. Understand the concept of bioremediation: Bioremediation is the process of using microorganisms to remove or neutralize pollutants from a contaminated site.
2. Identify the key characteristics of bioremediation: It typically involves the use of bacteria, fungi, or plants to degrade or detoxify environmental contaminants.
3. Evaluate each option provided in the problem: Determine which options involve the use of microorganisms to clean up or degrade pollutants.
4. Consider the example of using oil-degrading bacteria: This is a classic example of bioremediation, where bacteria are used to break down oil in an oil spill.
5. Compare other options: Assess whether the other options involve the use of microorganisms to clean up environmental pollutants, focusing on the primary goal of bioremediation.