Answer:

- we have to protect ozone layer because it is like blanket for earth . It protects the earth form uv rays that are coming from the sun
we have to take some preventive. measures like
- Use ecofriendly things that Doesnot contain (cfc) . It is the major reason for ozone Deplition
Effects of uv rays
- Uv rays are very harmful . If it directly comes in contact with human it cause skin cancer , eyes irritation etc.
Hope it helps.