CO2 and it's concentration?

Question

if CO2 is a 'heavy' gas how can it float up into the upper atmosphere where it "causes the most damage",same thing with jet engines and also has the concentration of co2 been recorded as being raised.Please no replies from tree huggers,only someone who knows the facts

"doing the most damage"thats what "experts" say about exhaust fumes from jet-planes like planes are filling up the atmosphere from the top down

Answer 1

Carbon dioxide is not a 'heavy' gas, even though it is heavier than nitrogen, which comprises 78% of the Earth's atmosphere.. I have never heard of it floating up into the upper atmosphere where it "causes the most damage". It is far more effective at retaining heat (in the form of infrared radiation) in the lower atmosphere where gas concentrations are higher. However, methane gas from bovine flaulence is a far greater concern than carbon dioxide. "Do you want fries with that Big Mac?"

Answer 2

carbon is known as a solid, but it doesn't contain metal. So its heavy. Heavy air traps more heat and that's why people are concerned.