It's CO2, not C02. I hate to be nitpicky, but the things are entirely different. C02 is equivalent to C2, which is Dicarbon. CO2 is Carbon Dioxide.Fine sunspots, then please explain why Venus is hotter then Mercury. If it's not the C02 then what?
And you're right, CO2, a greenhouse gas, is the reason for the temperature of Venus. But looking at only one part of a whole, and drawing incredible conclusions is scientific heresy. There is no life on Venus. No water, no trees, no people. This is an incredibly huge difference, don't you think? Volcanoes spew incredible amounts of CO2 into our atmosphere. Humans exhale incredible amounts of CO2 into the atmosphere. The difference between the Earth and Venus is that we have an active ecological system, which involves the recycling of CO2 into oxygen by our green friends in kingdom Plantae. Even the ocean gets involved, by being the largest carbon sink on the planet.
But this is all beside the point. Bringing up Venus to argue global warming is shameful. It's only effective because it preys on people's fears.