The primary agent that helps in the decomposition of biodegradable matter in domestic sewage is __________.
-
A.
nitrate
-
B.
phosphate
-
C.
bacterium
-
D.
chloride
Correct Answer:
C. bacterium
Explanation:
The decomposition of biodegradable organic matter in domestic sewage is primarily driven by microorganisms, specifically bacteria. These aerobic and anaerobic bacteria break down complex organic compounds into simpler substances as part of their metabolic processes. While nutrients like nitrates and phosphates are present in sewage and can stimulate microbial growth, they are products or secondary components rather than the active agents of decomposition. Therefore, bacteria are the essential biological agents responsible for the breakdown of waste in sewage treatment and natural water bodies.
Click below to open Discussion & Feedback
0 Issues
Please
login to comment or Report Issues.