14.12: Biological Factors Last updated Save as PDF Page ID10380 Contributed by Miracosta Oceanography 101Sourced from Miracosta) Biological factors: Competition for mates, food, and space Competition may be between members of a species or between species Predators Too many predators can wipe out a community; not enough predators cause population explosions, resource exhaustion, and collapse. Figure 14.19. Predator and prey (seal with fish meal).