Answer:

1st = Answer: Following changes take place in the body during puberty:

Increase in Height.

Change in Body Shape.

Voice Change.

Increased Activity of Sweat and Sebaceous Glands.

Development of Sex Organs.

Reaching Mental, Intellectual and Emotional Maturity.

2nd = At puberty the hypothalamic cells become less sensitive to sex hormones. The small amount of sex hormones circulating then fails to inhibit the hypothalamus; gonadotropins are released, and these stimulate the production of testosterone by the testis or estrogen by the ovary.

3= The pituitary gland is a part of your endocrine system. Its main function is to secrete hormones into your bloodstream. These hormones can affect other organs and glands, especially your: thyroid.

Explanation:

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1.list the important changes take place at puberty..

• Growth of hair in private body parts.
• Sudden increase in height.
• Growth of moustache and beard in boys.
• Voice of boys get deep and that of girls become shrill.
• Development of breasts in girls.