What are importance of great circle

Why do carbohydrate molecules function so well as fuel for the body?

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 is usually (but not always) related to the metabolic processes of living organisms in its organic form?