Re: OT: Carbon Dioxide races -> known vs unknown -> terraforming mars -> is or is not
I think without question that is possible Andres. It's entirely plausible to imagine a lifeform that follows the same basic rules but living on a world that is too hostile for us to survive. There are many lifeforms on earth that thrive in areas humans are unable to.
I wonder though if a person that breaths oxygen and is immune to the effects of cyanide for example because of their home environment would simply tolerate the cyanide, or develp some actual need for it. That would be the determining factor in whether they would need special aparatus to visit earth like worlds.
Geoschmo
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