That the sun will rise tomorrow morning and set tomorrow evening is hypothesis.
We will find out if It's a proven theory tomorrow.
CO2 levels have been rising exponentially since the industrial revolution. Global warming is now a proven theory.
Methane is also a greenhouse gas.
CFC destroys the ozone layer. As a greenhouse gas, I don't think it is. In a later post, I will draw your attention to the this gas in relation to your next comment.
So, do you believe all governments get it right everytime? They have been known to make the odd mistake or two.

