Changes in the physical appearance of adolescents,such as growth of facial hair in boys and breast development in girls,are called

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Secondary sexual characteristics refer to the physical changes that occur during puberty but are not directly related to reproduction. This includes the development of breasts in girls and the growth of facial and body hair in boys. Primary sexual characteristics, on the other hand, refer to the organs and structures directly involved in reproduction, such as the testes and ovaries. Differentiations and puberty are also related to the changes that occur during adolescence but do not specifically refer to physical appearance.

Changes in the Physical Appearance of Adolescents,such as Growth of Facial