Which of the following describes a relationship of parasitism a. oxpeker bird ticks off the backs of zebras b. a tick attaches itsself to the dkin of a dog c. a wolf catches a rabbit for a meal d. birds feed off the insects that are stirred up from the grasses as cattle move through

B. a tick attaches itself to the skin of a dog.

Explanation: Parasitism: A biological relationship in which one organism benefits and the other organism is harmed.

A. oxpeker bird ticks off the backs of zebras: is an example of a mutualism in which Oxpeckers land on zebras and eat ticks and other parasites that live on their skin. The oxpeckers get food and the beasts get pest control.

B. a tick attaches itself to the skin of a dog : A tick attaches itself to the skin of an animal and sucks blood and thus the dog gets harmed and the tick gets nourishment through blood and thus gets benefited.

C. A wolf catches a rabbit for a meal is an example of predation in which there is a biological relationship in which one organism preys on and eats another organism.

D. birds feed off the insects that are stirred up from the grasses as cattle move through: is an example of commensalism  in which there is a symbiotic relationship in which one organism benefits and the other organism neither benefits nor is harmed.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error