Just go kill yourself, when you know what the fuck you are talking about let me know...
Rofl, you've been completely wrong, and now you get mad because of it?
Here's what you claimed...
1. Humans can survive off of pure oxygen
2. The more oxygen there is, the better it is for humans.
3. The more CO2 there is, the better is it for plants that take in CO2.
All wrong....
1. Humans can't survive off pure oxygen, they'll die. Air is mostly nitrogen, not oxygen(i'm saying this because you seem to be confused that air is made out of only oxygen, which leads me to believe that would be your reasoning behind "the more oxygen the better" statement.)
2. Again, humans can't live off of only oxygen, and if you upset the oxygen/nitrogen/helium gas mixture that you take in that makes up air, you will die.
3. Like I said, if the CO2 ammount is higher than 20% in the atmosphere, plants will die. They can't live off of it if there is too much.
These are facts, they aren't wrong. You clearly are convinced that I don't know what i'm talking about and that i'm completely wrong. Here.
"About 2 billion years ago, the concentration of CO2 was likely 20 or 30%. Human life and even most life could not have survived in such an atmosphere."
That is taken off of environmentalc
hemistry.com, but you're probably right, they probably know nothing about chemistry or biology. You have yet to cite any of your claims.