Ozone is harmful in the environment sigment .r. but it is useful in the environment sigment .y.. What are r and y?

Ozone is harmful in the environment sigment .r. but it is useful in th

1.	Ozone is harmful in the environment sigment .r. but it is useful in the environment sigment .y.. What are r and y?
Answer» Solution : .X. is TROPOSPHERE. Ozone is a POLLUTANT. .y. is stratosphere. Ozone ACTS as a PROTECTIVE umbrella.