What is the classification of livingthings called? a biology(b astrologyc) taxonomyd astronomy

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line