Question

Ozone layer is made up of oxygen molecules and it is spread between 10 km to 50 km above the ground. We see mountaineers carrying oxygen cylinder and fighter pilots is bearing oxygen mask. Why they have to do so when there is already a layer of ozone above the ground?
A) Because ozone is not useful for breathing B) Because layer of ozone is very high C) Because they do so for just precautions D) Because there is not sufficient ozone for breathing

Answer 1

ozone is nt good fr breath ....so option A is correct

Answer 2

Answer:

option A

Step-by-step explanation:

we need o2 to breathe, But the ozone layer is o3...even if there are oxygen molecules present in the layer, breathing there can harm our lungs. So mountaineers carry oxygen cylinders so they can breathe.