0 in a way that involves two types of animal or plant, that each provide the conditions necessary for the other to continue to exist: --
Nitrogen fixing bacteria either live symbiotically with plants, or live freely in the soil.
They live symbiotically with the clones who have astonishing morphing abilities but very limited problem solving skills.
It is ectomycorrhizal, feeding symbiotically exclusively with oak, though studies have suggested it is also able to feed saprotrophically, growing from organic soil matter.
They learn that those entrapped are becoming symbiotically linked together through the entity.
The microbes being discussed are generally non-pathogenic (do not cause disease unless they grow abnormally); they exist in harmony and symbiotically with their hosts.
The two struggle together against the brutality and loneliness of life as they care for one another symbiotically.
Most of the corals are symbiotically dependent upon zooxanthellae -- a type of algae.
They grow symbiotically with green algae, or parasitically on other lichens.
