-Relationships-
~Parasitism=a relation between organisms in which one lives as a parasite on another.
~Predation=predatory behavior.
~Commensalism=a type of relationship between two species of a plant, animal, fungus, etc., in which one lives with, on, or in another without damage to either.
~Mutualism=a relationship between two species of organisms in which both benefit from the association.
~Competition=the act of competing; rivalry for supremacy.