what is approximate age at which puberty starts in (a) boys and (b)
ggirls ..

Dear student,

As the age varies from person to person, puberty approximately starts at the age of 9-12 years in girls and at age of 10-13 years in boys. Many physical changes occur at this age.

Regards

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Girls
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Dear Student,

On average, girls begin puberty at ages 10–11 and complete puberty at ages 15–17; boys generally begin puberty at ages 11–12 and complete puberty at ages 16–17. The major landmark of puberty for females is menarche, the onset of menstruation, which occurs on average between ages 12 and 13.

Regards,
Daivik Lakshmipathy.
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Dear Student,

Puberty is a process of physical change that occurs in human body during maturity. This stage usually begins at ages 13-14 for boys, and ages 10-12 for girls. However, this may vary from person to person.

Girls usually attain puberty by ages 15-17 while boys attain puberty by ages 16-17.

Regards,
Priya Agrawal.
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Average age for puberty in girls is 11 and in boys it is 12 years
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Girls 11
Boys 12
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