Astable long-lasting community that results from succession is a

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

The similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between organisms in both locations?

In which layer do organisms on earth love?