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1.a female is already capable of reproduction when she______.

a.become 12 years old
b.become 20 years old
c.starts menstruating
d.richest adulthood

2.when does the menstrual flow take place?

a.when ovulation happens
b.when the egg cell is fertilized
c.when the egg cell is not fertilized
d.when the egg stays in the fallopian tube ​