Final answer:
Puberty is the period during which children become sexually mature. It includes the development of primary and secondary sexual characteristics, as well as an increase in height and weight. Puberty is a process and cannot be pinpointed to a single event.
Step-by-step explanation:
Puberty is the period during which children become sexually mature. It includes maturation of the primary sex organs, the development of secondary sex characteristics, and the adolescent growth spurt. Among the noticeable changes during puberty are signs of sexual maturity, such as the development of breasts in females and facial hair in males. Additionally, height and weight increase during puberty. Puberty is a process, not a single event, and while we can pinpoint the beginning of puberty, we cannot determine exactly when it is over.