Which of the following describes a relationship of mutualism? a oxpecker birds eat parasitic ticks off the backs of zebras b a tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat c a polar bear catches a seal for dinner d birds feed off the insects that are stirred up from the grasses as cattle move through

A) Oxpecker bird eat parasitic ticks off the backs of zebras :)

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms