Question

Why should you be concerned about a hole in the ozone layer?

Answer 1

We should so.... because the hole is giving a way to the ultra-violet rays from the sun entering the earth....which can cause skin problems...global warming etc etc.
Thank you ...

Answer 2

It may cause the ozone layer to thin again.

Or it may lead to a worrisomely thick ozone layer, reducing the amount of ultraviolet light the planet gets, which would drastically affect our lives, health, and wellbeing.