yes any gun that shoots bullets has shells. A revolver doesn't 'dump' the shells out, they have to be removed by the shooter before it can be reloaded. It is a bit easier to keep track of the empty brass and avoid leaving evidence behind.
No.
I have never seen nor heard of a revolver airsoft pistol with non reusable shells. You should have no problems reusing them.
No, they can not, do not attempt to mix real ammunition in airsoft guns.
will a 38 revolver leave gun residue on clothing when fired
No. But there are revolvers made to shoot .410 shells that also fire .45 Colt cartridges,
Yes.
Can you....I think you mean Can you 'SAFELY' leave shotgun shells in a hot car? The short answer is yes, but it will degrade the quality of the ammo.
they leave it there for another snail
Yes, airsoft shells are refillable, being made of hard plastic and a hole to insert bb's in.
In a .44 Magnum revolver, yes. In a semi-automatic .44 Magnum (such as the Desert Eagle), no.
yes 22lr are ok.
Yes, a turtle is a vertebrate.All reptiles are vertebrates, because they all have spines.The spine of a turtle is attached to the inside roof of their shells. Making it physically impossible for them to shed shells or leave their shells.