Even the combustion from the exhaust of cars, continuous construction of roads, all lead to depletion in ozone layer, the earth keep degenerating by the hands of humans daily.

Thanks for raising this issue, i hope this post goes past this competition because the world needs to take concious effort to resolving this issue. I made my submission aswell, mine is about the rainforest, i could send you the link to check it out. I just followed you.
Cheers