A material which gets decomposed through natural processes, such as action by bacteria, is called biodegradable. Following are the biodegradable materials:

Woollen clothes, paper, peels of vegetables and fruits, Cotton cloth and Jute bag.

A material which is not easily decomposed by natural processes is termed as non-biodegradable. Following are the non-biodegradable materials:

Polythene bags, Aluminium cans, Toothbrush, Electric switch and Frying pan handle.