Differentiate between biodegradable and non-biodegradable pollutants.
|Biodegradable Pollutants||Non-biodegradable Pollutants|
|• These pollutants are organic matters and can be decomposed by the activity of microorganisms.||• These pollutants are inorganic and they do not decompose.|
|• But when these substances accumulate in large quantity, microorganisms are unable to decompose them completely and thus they cause pollution.||• These substances accumulate and cause tremendous harm to the environment and living organisms.|
|• Can be recycled naturally or by humans||• Cannot be recycled naturally.|
|• Useful products can be produced after biodegradation.||• They remain unchanged or if they take part in chemical reaction, their products are also biodegradable.|
|• Example: Paper, cow-dung, vegetable peels||• Example: DDT, synthetic fibres, plastic, metals, Styrofoam.|