Question

8 multiple choice 0.8 points which of the following is not one of the positive roles played by microorganisms? recycling of elements from dead tissues generating approximately 50% of oxygen on earth digesting cellulose in ruminant animals cleaning of oil spill in the sewage treatment plant

Explanation:

Microorganisms play roles in recycling elements from dead tissues (decomposition), generating a large - portion of Earth's oxygen (photosynthetic microbes), and digesting cellulose in ruminants. However, oil spill cleaning is mainly done by specific bacteria and other organisms in oil - contaminated environments, not in sewage treatment plants for the purpose of cleaning oil spills as a primary function. Sewage treatment plants focus on treating sewage, not cleaning oil spills.

Answer:

Cleaning of oil spill in the sewage treatment plant