Science Why is it often difficult to compare and contrast the growth and development of different adolescents? Asked by arwen46 13 years ago 1/27/2013 11:03 AM Last updated by anonymous 13 years ago 1/28/2013 9:29 PM
People are individuals right down to their DNA. It is difficult to hold one standard that is going to exactly match every individual, therefore rates of growth may vary widely among an age group.