Mrs.Holstein, the sex education teacher, tells the class that at puberty, changes will begin to occur in the bodies of both males and females.Females will experience breast development, their hips will broaden, and their overall body shape will change.Males will grow facial hair and their voices will deepen.Mrs.Holstein is explaining

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Mrs. Holstein is explaining the secondary sex characteristics that occur during puberty. Primary sex characteristics refer to the reproductive organs themselves, while secondary sex characteristics refer to the physical changes that occur as a result of increased levels of hormones during puberty.

MrsHolstein, the Sex Education Teacher, Tells the Class That at Puberty