How much CO2 does a Human emit per year through respiration?

That's not going to make any significant difference. CO2 come from processing food we eat. So eating less will produce less CO2 but it won't make any impact on our atmosphere.

More.

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.