Q69
Which term describes the process by which pollutants are removed from water by natural microbial activity?
A.
Biodegradation
AnswerB.
Filtration
C.
Sedimentation
D.
Adsorption
Answer: Option A
Solution
Answer: Option A
Solution:
Biodegradation is the breakdown of pollutants by microorganisms into less harmful substances.This is a natural water purification mechanism.