Question

Give reasons for the following:

a) Change in the voice of boys at puberty.

b) Acne or pimples common among the adolescents.
Class-8​

Answer 1

Answer:

a)

• Before a boy reaches puberty, his larynx is pretty small and his vocal cords are kind of small and thin.
• That's why his voice is higher than an adult's.
• But as he goes through puberty, the larynx gets bigger and the vocal cords lengthen and thicken, so his voice gets deeper.

b)

• Pimples occur mainly because of hormonal changes in the body.
• It is especially during puberty that the level of sex hormones increases and it can cause pimples.
• Especially during puberty, oil glands in the skin can become overactive, producing too much of an oil called sebum.

Explanation:

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Answer 2

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QueStion :-

Change in the voice of boys at puberty ?

AnSwer :-

Before a boy reaches puberty, his larynx is pretty small and his vocal cords are kind of small and thin. That's why his voice is higher than an adult's. ... As a boy's body adjusts to this changing equipment, his voice may "crack" or "break." This process lasts only a few months.

QuesTioN :-

Acne or pimples common among the adolescents?

AnSweR :-

Most of the time, the sebaceous glands make the right amount of sebum. As the body begins to mature and develop, though, hormones stimulate the sebaceous glands to make more sebum. Pores become clogged if there is too much sebum and too many dead skin cells.

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