Question

Distinguish between biodegradable and non-biodegradable wastes.

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Answer

Biodegradable wastes Non-biodegradable wastes
i. These are wastes which can be broken down to harmless or non-poisonous substances by the action of microorganisms. These are wastes which cannot be broken down to harmless or nonpoisonous substances by the action of micro-organisms.
ii. These wastes undergo rotting. These wastes do not undergo rotting or take a very long time for rotting.
iii. Example: domestic sewage, newspapers and vegetable matter. Example: polythene bags, plastics, glass, aluminium cans, iron nails and DDT.

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