Nothing eliminates anything. It's all CxHy + zO2 -> nCO2 + mH2O There is such thing called second law of thermodynamics. The only question is into how much st

Nothing eliminates anything. It's all CxHy + zO2 -> nCO2 + mH2O There is such thing called second law of thermodynamics. The only question is into how much stages we can split this process, and how much useful stuff we can extract from each of those.