relationship?

Burt Cheevers: animals can have relationships with each other- prey/predatorliving organisms can have relationships with each other-parasite/hostwords can have relationships with each other-subject/verb, adjective/noun, adverb/verb, antonym/synonym, etc....Show more

Bob Pucella: Animals, variables, equations, functions, solar systems, etc.

Karie Mavle: Variables can have a relationship. Inverse square, direct square, and etc.