These days clothes made out of a mixture of synthetic fibres and natural fibres are more popular than those made purely out of synthetic fibres. Discuss the reasons for this.

The prefix 'poly' means 'many' for example, 'polygon' means a figure with many sides. What is the significance of the prefix 'poly' in 'polyester'? 

Synthetic fibres are strong, elastic, light, wrinkle-resistant, and easy to wash and dry. Even with so many advantages, we do not wear clothes made of pure synthetic fibres, but a mixture of synthetic and natural fibres. Why is this necessary? 

Bakelite and polythene are both plastics. However, there is one major difference in their nature. What is the difference?