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Question

(a) What is meant by biodegradable waste materials? Give two examples of biodegradable wastes.

(b) Which of the following materials are non-biodegradable? Aluminium wire, Tea leaves, Synthetic fibre, Wool

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Solution

(a) Waste materials that can be broken down into non-poisonous substances in nature in due course of time, by the action of micro-organisms such as certain bacteria, are called biodegradable wastes. Examples are paper and vegetable peels.

(b) Aluminium wire and synthetic fibre are non-biodegradable.


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