Word Bank: mantle, outer layer, pattern, plate, plate boundary, rate.
Why do you think it is difficult to tell that the plate boundary is moving right now?

What re the two main phrases of the cell cycle.

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

How many major plates cover the earth