Comment on Heliocentric theory is wrong (pt1) by Han Htun.
But the earth is too big and it has gaseous spheres that can have our/its own air system isolated. It could have been carrying most of the gases and contaminants all along. That’s why Green House effect could never get self offset or healed.
Also the bondage between the gaseous molecules and atoms play a role to carry the air on the earth’s surface.
You cannot do small model experiment as the earth is very huge compared to your experiment subjects.
There are other things such as gravitational force that the earth has.