In your own words, what is the definition for Cytoskeleton?

Which is true of the regious near earth equator

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

9. the history of life on earth is recorded in