(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
(i) Name the main components of environment.
(ii) Classify the household waste into different types.
(iii) List any two harmful effects of non-biodegradable wastes.