A stage of maturation of the cortex of the human adrenal glands, related to puberty, typically occurring between the ages of six and ten years and involving both structural and functional changes.
A method of natural birth control that involves counting days of a woman's menstrual cycle in order to determine when sexual intercourse is most or least likely to result in pregnancy.
A scale of physical development in children, adolescents, and adults, based on external primary and secondary sex characteristics, such as the size of the breasts and the development of pubic hair.
A human offspring that is developing in the uterus; fetus.
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