Hi! Your question was incomplete so I had to find the question online by googling it. Here are the answers:
Answer:
-Differentiation and development of all the body organs occur during the prenatal stage of life. Environmental stress during this stage predisposes the individual to disease later in adulthood.
-The postnatal stage-from infance to childhood to the juvenile period to adolescence to adulthood-involves growth acceleration and deceleration. Childhood and adolescence are long events, in which adult behaviors are learned, individuals become completely mature, and the reproductive capacity develops.