Who utilizes the maximum amount of oxygen in the upstream of sewage discharge?
AAnimals
BMicroorganisms
CHumans
DPlants
Answer:
B. Microorganisms
Read Explanation:
In the upstream of sewage water, the maximum oxygen is used by the microorganisms.
Due to this, there is less oxygen availability in the downstream that is rivers, ponds, or the other water bodies where the fully processed wastewater is released.
