What is the Subphylum and Class for an ant, spider, and fly?

In which direction is the pacific plate moving in relation to the north american plate?

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity

The chromosomal structure that limits the number of cell divisions of a cell is the the chromosomal structure that limits the number of cell divisions of a cell is the kinetochore telomere histones centromere