Microbes are Involved in Which Step(s) of Wastewater Treatment

Question

Microbes are involved in which step(s) of wastewater treatment?
A) primary only
B) secondary and tertiary
C) secondary only
D) primary and secondary

Accepted Answer

Microbes play a crucial role in the secondary and tertiary steps of wastewater treatment, where they help break down organic matter and remove pollutants.