What are biodegradable and non-biodegradable pollutants?

environmentchemistry
cbse

#1

Biodegradable pollutants are those which are decomposed by micro-organisms such as bacteria, e.g., sewage, cow-dung, discarded vegetables etc.
Non-biodegradable pollutants are those which cannot be decomposed by microorganisms e.g., mercury, aluminium, lead, copper, DDT, etc.