What happens when the body needs new cells?
What does "divides" mean?
What does "copies" mean?
What does "center" mean?
Why do cells make new cells?
Why do cells need instructions?
What happens when normal cells get sick?
What are sick cells called?
How are cancer cells different from normal cells?
What is the problem with new cells that the body does not need?
Think about this whole text. Why do people get cancer?