Biology, asked by royaledito, 10 months ago

answer it plaza it's to important as I am writing my notes

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Answered by arc555
1
It is refers to the period of a person’s life between being a child and becoming an adult, between the ages of about 13 and 17.

Changes in boys.

1. Deepening of voice.
2. Hair under arm
3. Develpoment of beard.

Changes in girls.

1. Start of menstrual cycle
2. Broadening of hip bone.
3. development of pimple.
4. Enlargment of chest
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