Your powers of reasoning have not improved. CO2 is produced when the world's oceans are warmed as that reduces the solubility of gases in liquids and it warms the planet via the greenhouse effect. A perfect positive feedback effect.What??????????????????????????? You just admitted that climate change isn't necessarily man made because the other times in our history with high levels of CO2 and global warming, man wasn't even around. You just proved my point!!!!!!!!!!!!!!!!