The answer bnb is true becuase without desity in anything nothing would circulate
Answer: A small middle portion of the sperm contains the mitochondria. The tail of the sperm, sometimes called the flagellum, is a slender, hairlike bundle of filaments that connects to the head and middle portion. The tail gives the sperm cell movement. It whips and undulates so that the cell can travel to the egg.
Doctors try to remove tumors from the body to prevent it from spreading and affecting other parts of the body.
