Question

Carbon dioxide gas is heavier than both nitrogen and oxygen. Why does not it from lower layer in the atmosphere?

Answer 1

Hey,
Ur answer is here,
Though carbon dioxide is heavier than air, but it has a tendency to mix with other gases of air and since the rest gases are found at higher altitude so the carbon dioxide could not be able to be in the lower layer of atmospheric air.
Hope it helps you ☺️

Answer 2

carbon dioxide have tendency to mixture with other gases
but other gases found to be heigh altitudes
therefore................