Apparently you want to be careful in what you claim so that you cannot
be contradicted by the facts. Let me put you on the spot.
Do you agree that human industrial activity is the principle cause of
ozone depletion?
If not, what do you think is causing ozone depletion?
Do you agree that most chlorine in the upper atmosphere (where ozone
depletion occurs) is due to human industrial activity?
If not, what do you think is the source of most chlorine in the upper
atmosphere?
These are not trick questions. These are fundamental questions which
must be answered in dealing with the ozone problem.
Thanks,
Hal