Should the handle and bristles of a toothbrush be made of the same material? Explain your answer
Should the handle and bristles of a toothbrush be made of the same material? Explain your solution.
Should the handle and bristles of a toothbrush be made of the same type of plastic material ? Explain your answer.
Classify the following as biodegradable and non-biodegradable materials :
Woolen clothes, Polythene bags, Paper, Aluminium cans, Toothbrush, Peels of vegetables and fruits, Cotton cloth, Jute bag, Electric switch, Frying panhandle