Carbon dioxide and nitrogen and oxygen have been reduced to a non-existant entity, a concept of a gas with no properties and processes, as they've done with «all electromagnetic
energy is the same and all create heat on being absorbed», making them
ideal gases without properties and processes in the Greenhouse Effect — they have actually become hard dots of nothing without volume travelling at great speeds under their own molecular momentum bouncing off each other in
elastic collisions, as the description of the imaginary
ideal gas in a container of real world physics textbooks.
The gas molecules can move throughout the Fig. 1 column top to bottom w / o constraint other than random
elastic collisions freely mixing subject to constraint of
ideal gas,
energy conservation and entropy laws.
If the pool balls are perfectly
elastic, like the molecules of an
ideal gas, the top one pops up a bit in reaction because of conservation of momentum and
energy.