Evolution is a loop of random mutations that get reproduced if they randomly happen to give the organism better odds at reproduction.
Some germ gets a little better at spreading via mucous, so it gets to reproduce more because humans make mucous when they get sick
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Evolution is a loop of random mutations that get reproduced if they randomly happen to give the organism better odds at reproduction.
Some germ gets a little better at spreading via mucous, so it gets to reproduce more because humans make mucous when they get sick