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Re: ...bats by day, and bats, birds, by night.
I suppose a difference in atmospheric mixing down low could cause some change
composition of the upper atmosphere. Other than some ionization up high (or
thereof), I don't know that I'd expect much difference, if any.
John Bois wrote:
> On Mon, 15 Jul 2002, James R. Cunningham wrote:
> > 4) for soaring animals, there is another, possibly more likely cause. If
> > this
> > exchange were taking place in one of my classes, I'd suggest that everyone
> > think
> > about it a bit and ask for a discussion of possible causes. Come to think
> > of
> > it, I believe I'll do just that.
> Chemical composition of upper atmosphere?