Question

the period of time when physical development of secondary sexual characteristics begin.​

Answer 1

The development of both primary and secondary sexual characteristics begins during late childhood and continues throughout early adolescence. However, it is important to remember youth experience these changes at different rates and times.

Answer 2

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Adolescence the period of a person’s life between being a child and becoming an adult, between the ages of about 13 and 17.

Secondary sex characteristics appear at a mean age of 10.5 years in girls and 11.5 to 12 years in boys.