Complex organic compounds in sewage are broken down by bacteria. What is the role of bacteria in this?
A. Bacteria act as nitrogen fixers.
B. Bacteria act as decomposers.
C. Bacteria act as catalysts.

Respuesta :

The correct answer is (b.) Bacteria act as decomposers. Complex organic compounds in sewage are broken down by bacteria. The role of the bacteria inside is to act as a decomposer. For example, anaerobic bacteria decomposes the human excreta to its simplest form.

Answer:

The correct answer is option B. "Bacteria act as decomposers".

Explanation:

Decomposers are organisms that decompose organic material, making it available for themselves and other organisms in the food chain. Usually, decomposers are soil bacterium, fungus, or other invertebrates. In this scenario, bacteria broke down complex organic compounds in sewage. Since bacteria is decomposing organic material in the sewage, bacteria act as decomposers.