Life is competitive and countless species have developed complex symbiotic relationships with other species in order to survive. A symbiotic relationship is a relationship where both participant species benefit mutually. Symbiotic relationships appear to be the rule and not the exception in life.
Symbiotic Interdependence—whereby all species are to some extent be dependent on one another— is a key characteristic of al life's ecosystem.
Biological interdependency takes many forms in life, from species relying on other species for pollination and seed dispersal to predator-prey relationships to symbiotic relationships.