IDK, CO2 forms approximately 0.04% of the nominal 5,000,000 +/- gigatonnes of gas and aerosols that comprise the Earth's atmosphere. Proponents of global warming say 3%-4% of CO2 in the atmosphere is manmade.
Doing the math .04%=.0004 and 4%=.04: . 0004 *.04 = 0.000016 or 1.6*10^-5.
SO mankinds contribution to CO2 in the atmosphere is approximately ONE HUNDRED SIXTY THOUSANDS of our atmosphere.
Yea it's definitely all our fault!!! You mean that 0.000016 of earths atmosphere over the last 200 years just unbalanced the whole thing.
Also the consensus on the temprature increase is that the earth's temp has gone us somewhere between .75 and 1.25 degrees in the last hundred years. However we have only been keeping temp records for something like 160 years, so who can really tell us what the increase means.
This just in our galaxy is warming up. maybe this manmade global warming is really a manmade galaxy warming!!!!!!!!!! Wholly shit batman that ONE HUNDRED SIXTY THOUSANDS of our atmosphere just screwed our galaxy.