The Body (1970)

Full frontal male and female nudity of various ages including children.

A man and a woman are shown having unsimulated sex.

During a segment the camera pans across a line-up of fully nude people of various ages standing neatly in a line. Starting from children to young teens, then adolescents and finally adults, showing development changes over the years. Breasts, genitals, pubic hairs and buttocks are clearly visible.