Question

the first manstrual being at puberty is known as​

Answer 1

Hey mate here's your answer,

The first menstrual period at puberty is known as menarche.

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Answer 2

MENARCHE

The onset of menarche marks the beginning of the reproductive years of a woman's life. Actually beginning just before the first. menstrual period a girl has had her first. ovulation. It is actually that first ovulation that causes the first period or menarche. Once a girl ovulates she can get pregnant