Give two examples each of, biodegradable and non-biodegradable material. [2 MARKS]
Examples : 0.5 Mark each Biodegradable – Paper and cotton cloth
Non biodegradable – Aluminium can and plastic bags
What is biodegradable and non biodegrdable wastes? Give example for each. [3 MARKS]
(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.
What are biodegradable and non-biodegradable detergents? Give one example of each.