Question

difference between boys and girls after 13 .

Answer 1

•girls start having periods.
•girls go on a physical change.

•boys start growing their moustache and beard.
•body of boys will be broad muscles ,body will become more strong.

Answer 2

Hyyy...
Here is ur answer....

CHANGES IN BOYS AFTER 13
- Thick hair growth under armpits and genital area.
- Facial hair i.e. moustache and beard.
- Change in voice.
- Testis and penis enlargement.
- Testis start producing male gametes
sperm and male sex hormone
testosterone.

CHANGES IN GIRLS AFTER 13
- Menstruation starts
- Mammary gland develops and enlarge.
- Hair growth under armpits and genital area.
- Ovaries start producing ovum and female sex hormones oestrogen and progesterone.

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