Ever notice atmospheric gasses are apparently "not allowed" to ever change per liberals, but gender can change daily?!?

Liberals have trouble with words. Apparently earth cannot change atmospheric composition, and if it does change, its human's fault and we must ban gas stoves. Meanwhile you can change you gender 300 times a day, including genders that do not exist in the biological records (so... something that actually is impossible) and libs are fine to play along?

C02 is heavier than air, so it can’t form a canopy around the earth to heat it up and melt the ice caps.

my brother in christ, CO2 is the f*cking air(about 0.04%, which doesn't sound like a lot but it is) and it isn't just CO2 that is the problem because believe it or not, there are other greenhouse gasses

Technically speaking, the air is everything from the grass (or sand, or sea as the case may be) upwards until you reach outer space. It becomes thinner as you go higher, but it’s still air. The part that is carbon dioxide falls below the nitrogen and oxygen where it is absorbed by plants to be used in food production.

And yes, CO2 is denser than most of the atmosphere(which is mostly nitrogen) but you said that it was heavier, which makes no sense as "heavy" is determined by the gravitational pull acting upon an object

You still used the terminology wrong which is the scientific equivalent of "minor grammar mistake, I win"

You absolute silly billy, the data that you presented is nitpicked from the beginning of the period. Due to the massive increase in plant matter during the carboniferous period, there was a decrease from around 1500ppm(0.15% of the atmosphere) at the start of the period(358 million years ago) all the way down to between 700 and 150ppm(0.07% and 0.015% of the atmosphere respectfully) at the end of the period(298 million years ago). This is because, get this, plants absorb carbon dioxide and release oxygen which is also why atmospheric oxygen levels rose all the way to 35% during this time. Now tell me if it is good that in the span of 200 years, carbon dioxide levels have rose by 147ppm while it took the earth 60 million years to lower the levels by 1350ppm. This means that at the rate we are going, it will take 788 years to reach those same levels that existed during the early carboniferous which I would say is suboptimal