And for those that get confused about ozone being good or bad its like this:
Ozone (3 Oxygen atoms together in one molecule or , O~3~)
- is really bad for humans to breath (and life to continue) so when its on the ground next to us = bad
- Ozone forms naturally in the stratosphere as long as we don't put a bunch of chemicals which breaks ozone or prevents its formation (like CFCs, which are now mostly banned around the world). Ozone is absolutely vital for human (and all in general) life on Earth high up in the stratosphere because it blocks a bunch of the sun's UV rays from getting down to us here on the ground. = good