Question

What is sexual maturation? How does menstruation occur? What is the function
of placenta during pregnancy?​

Answer 1

The physical changes or harmonic changes occurs in boys and girls during teenage is called sexual maturation.

whole explanation you will find in chapter 10 of class 10th of NCERT

Answer 2

Answer:

sexual maturation is a set of changes in the body of an individual at puberty like cracking of voice, new hair patterns ,development of breast in female a

etc. if egg is fertilized it moves up and has held its im- planted on uterus the uterus fall becomes and richly supplied with blood the region between embryo and uterus wall thickness and richly supplied blood which provides nourishment and oxygen to the embryo the child is born as a result of rhythmic contraction of the uterus muscle.

Explanation:

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