Development is the evolutionary process of gradual changes in the set direction.
Heredity: Heredity is transfer of biological characteristics like blood group, facial features, height, weight, mental faculties from parents to children. Thus, genes from parents somewhat decide the growth and development of children.
Recreations: Happiness, pleasure, love, appreciation, laughter etc. leads to mental development which directly or indirectly causes physical development. Boredom is burdensome and causes ill-effects to mental and physical development.
Accidents: Accidents may check mental development in child. Also, it has obvious physical development issues.
Diseases: Disease of any sort affects the physical development of a person due to which it directly affects the mental faculties of that person.
