Respuesta :

Actually there are a lot of external factors which can affect our personal traits. Some examples would be the type of environment we are living in, the kind of upbringing that we have, the social economic status of the community, or the type of friends.

Beside genes, two other factors that can have influence on our traits are NUTRITION AND ENVIRONMENT. 
Traits refers to different forms of characters that is found in a living organisms 
The quality of food that a man eats and the kind of environment in which he lives have significant impact on his traits.