How do you know that natural sources are not responsible for ozone depletion?

Depleting chemicals: Manmade molecules have been found at high altitude, molecules so stable, that the only way they can be removed from the Earth's systems is by energetic UV radiation. This radiation does not exist much below the ozone layer (which is its job). These molecules, or parts of them, have been shown to destroy ozone in the laboratory, and produce certain key molecules when they do.

These molecules have also been found at high altitude Water vapor: some water vapor is lofted by Man's power plants (including those with wheels), some by s aircraft and rockets (to a lesser extent due to volume of fuel expended), and some form Natural sources (which are not changing year to year) Decreases in oxygen at altitude: Ozone is made from oxygen, ever more aircraft are consuming oxygen at altitude, burning rainforests for arable land, and burning fossil fuels at an oxygen rate thousands of times more than the organisms anywhere on the planet We KNOW the only thing increasing is Man's activity. We have everything being watched. We know when a bucket of water is removed from a well, the well level drops a bit.

How can ozone depletion IF it is happening, be anything but Man-caused? I mean seriously.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.