Development of the human body used to approximately judge a child's age based on physical development. Puberty is the process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. It is initiated by hormonal signals from the brain to the gonads: the ovaries in a girl, the testes in a boy. In response to the signals, the gonads produce hormones that stimulate libido and the growth, function, and transformation of the brain, bones, muscle, blood, skin, hair, breasts, and sex organs. Physical growth—height and weight—accelerates in the first half of puberty and is completed when an adult
Music for the Amorphous Body Study Center 6 and 7 are combined into one track. Music for the Amorphous Body Study Center Music for the Amorphous Body Study Center is an EP by Stereolab, created in collaboration with New York sculptor Charles Long. The songs became part of Long's exhibit, complementing each of his sculptures. The album was initially available only at the exhibit in a pressing of 1500; another limited pressing was later released in stores but it is now out of print. All tracks were included in the compilation album "Aluminum Tunes: Switched On, Vol. 3". The untitled track is an instrumental reprise of "The