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Question

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

(b) Which of the following materials are biodegradable? Animal bones, Iron nails, Plastic mugs, Leather belts, Silver foil.

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Solution

(a) Waste materials that cannot be broken down into non-poisonous or harmless substances in nature are called non-biodegradable wastes. Examples are plastic and iron nails.

(b) Animal bones and leather belts are biodegradable wastes.


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