Quote:
Originally Posted by bojan
also I do not think there is any danger of disease or infection (species barrier is not easy to jump over even between organisms evolved here on Earth... the probability of alien organisms that could feed on us is really minuscule, I would say nil. Most likely we would be poisonous to them and vice versa)
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Yes, you are right from the point of view of disease... I overlooked that. Disease has been devastating
because we are the same species.
But given the "success"

of introduced species such as the cane toad etc, I think there is a risk of an alien life form (however basic and simple) taking a liking to our environment and thriving without effective predators.
Al.