How environmental factors responsible for Exceptionality?

Environmental variables are considered to play a part in the causation of positive, negative, and numerous exceptionalities among children from the moment of their creation in their mothers' wombs. What is available to them in the form of post-natal factors after the birth, especially during the first five years of their early life, what is available to them in terms of incidents and accidents, and what is available to them from their mothers for their nurturing and well-being during the prenatal period, the mental and physical health of the pregnant mothers, their exposure to substances and drug abuse, radiation, and accidents, chronic health problems, infections and diseases encountered by them all go in creating sizable deviation and exceptionality among them.