Dave Shrader wrote:
It's worse than that. Breath Carbon Dioxide and you can die!! That's
why the enviro types want it banned.

If Carbon Dioxide is eliminated, all the plants will die so
we will all die anyway from lack of oxygen. Carbon Dioxide
is relatively harmless to us until it displaces oxygen. If
the astronauts took enough plant life with them, they wouldn't
need CO2 scrubbers.
--
73, Cecil http://www.qsl.net/w5dxp



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