Pls help I’m failing

Use the drop down menus to match each example to the fossil topic discussed then to show how the fossil record gives evidence of evolution

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

What best explains the inability for life to exist in earth early atmosphere