Puberty. <span>While puberty involves a series of biological or physical transformations, the process can also have an effect on the psychosocial and emotional development of the adolescent. </span>
In his theory of Cognitive development, Jean Piaget proposed that humans progress through four developmental stages: the sensorimotor, preoperational, concrete operational and formal operational period.
Lactose glucose molecules joined together form
"Healthy Eating"
Author: Unknown
www.helpguide.org/articles/healthy-eating/healthy-eating.htm