Question

the crocodile and bird have a ---------------- relationship. the crocodile benefits by having its teeth cleaned. the bird benefits by gaining food and protection. both animals benefit from this relationship. commenalism parasitism mutualism predator and prey

Explanation:

Mutualism is a symbiotic relationship where both species benefit. In this case, the crocodile gets its teeth cleaned and the bird gets food and protection. Commensalism is when one benefits and the other is unaffected. Parasitism is when one benefits at the expense of the other. Predator - prey is a relationship where one hunts the other.

Answer:

mutualism