Which of the following is not a human use of microorganisms?

Question

Quizplus · Accepted Answer

Manufacturing copper wire does not involve the use of microorganisms. The other options all involve human use of microorganisms. Making bread involves the use of yeast. Treating water and sewage involves the use of bacteria to break down organic matter. Mass producing antibiotics involves the use of fungi or bacteria. Cleaning up oil spills involves the use of bacteria to break down the oil.

Which of the Following Is Not a Human Use of Microorganisms