Is a world with two different types of air possible?
Is it possible to have a world that meets the following conditions?
"¢ There are two types of air (in term of its gas mixture)
"¢ Each type of air has its own creatures which cannot survive in the other type of air
Let's not focus that much on the creatures but rather on the reasons for the existence of two types of gas mixtures.
Would it require some kind of (half) closed environment (like a cave) for one of the mixtures in order to stay separated?
If not, what could be the reasons for the two types of air to don't mix with each other (or just to a minor degree)?
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1 answer
So a very dense/heavy gas like sulfur hexafluoride has the ability to support the weight of objects, like a boat floating on invisible water.
So you could have creatures that live on the surface, and creatures that bob on top of the gas and roost on the mountain tops that rise above the gas.
I don't know what kind of bio chemistry it would take to survive breathing that gas exclusively.
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