Complete the sentence to explain how body parts move. When muscles contract and relax, the muscles move the
attached to them. This results in movement of different parts of the body.

How many major plates cover the earth

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

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion