What part of the skeletal system consists of the skull, breastbone, ribs and
vertebrae
Systemic
O
Vertebral
O
Axial
O
Appendicular

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