Without these adaptations, bacteria would never find their hosts, and sperms would never make it to their eggs, which means you would never get stomach ulcers, but you would also never be born in the first place.
Sem estas adaptações, as bactérias nunca encontrariam os seus hospedeiros e os espermatozoides nunca chegariam aos ovos, o que significa que nunca teríamos úlceras gástricas mas também nunca teríamos nascido.