Question

what is menstruation cycle

Answer 1

the cycle that start from age 12 or 13 to the age of 45 to 55 the changes in females is known as menstruation cycle
for example reproductive system and other change in body

Answer 2

The cycle start from age 12 or 13 to the age 45 or 50 in female. It is the regular natural changes in female reproductive system that make female pregnancy possible