All of the changes that occur from the time an egg is fertilized through childhood adolescence and adulthood are called?

All of the changes that occur from the time an egg is fertilized through childhood, adolescence, and adulthood are called development or human development. This encompasses a series of biological, psychological, and social changes that unfold throughout the life span. Key stages include prenatal development, infancy, early childhood, middle childhood, adolescence, and adulthood, each characterized by specific physical, cognitive, and emotional transformations.