Why do you always have to cut your hair, fingernails, and the grass

What was photo 51 with rosalind franklin?

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 chemical form of energy that is useable by the cell to do work