Invisible wrote:
> Did mushrooms evolve to be poisonous because that's advantageous 
> somehow? Or do they just happen to be poisonous to animals because of 
> their unusual chemistry?

Or did animals eat all the non-poisonous mushrooms, leaving only the 
poisonous ones to reproduce?

One of the biggest misunderstandings about evolution is the nature of 
"natural selection."  The word "selection" implies an active force 
(which most people assume it is), while really it's an effect of the 
system rather than a force for change.

It's the difference between cause and effect.

...Chambers

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