Ovulation is when an egg is released from the ovaries in order to be fertilized. Menstruation, is what is referred as your period or time of the month, is bleeding that happens after ovulation. (If your not pregnant..) If fertilization doesn't happen, the menstruation will start. It would be a process that needs each other in order to have a baby or menstruate. Hope the answer is satisfying :)) You could add more to the sentences if you want. :)
