CLEAN : Coronavirus survivors donate plasma in New Delhi

The video introduces the concept of 'surface' and includes a brief greeting.

What do you understand by the term 'surface' in different contexts?

Can you provide examples of different types of surfaces you encounter in daily life?

Discuss the role of surface texture in art and design.

How would you describe the significance of greetings in communication?

In what ways can greetings vary across cultures?