teratogen

A substance in the environment that cause physical malformations during prenatal developments.

maturation

A related physical change guided by a gentic plan.

canalization

The extent to which genes constrains enviornment influences on particular traits.

below poverty lines

A family of four with annual income of 19,560

quantative

A developement change invoving an increase in the amount of existing abilitlu or character.

acommodation

The process of modofying an stragedy or skill to meet a new challenge.