Science fair project help?

Question

Hey, I know what I am doing for a science fair project (I am seeing how much carbon dioxide is in automobile gas, someones breath, and just air, and pure oxgen.) I am wondering if there are any sites where I can find out how much gas, like automobile gas, and all that stuff is let out in the air daily, monthly, and yearly, stuff like that. The project is going to be in march.

And any good sites about my topic, thanks for any help!

Answer 1

Try the following website. I know the font is a little bit small, and it's a lot to read, but skim through it, you might find something. If not, then sorry, and good luck!