my study

I am a M.Sc of genetics student and today I am studying genetic behavior.I read that all of the behavior is effected by genes but not only by genes. and Environment is very important also. We can change and control the environment and can in order to change behavior. Today I know everything is mater important for humans and humanist (I don't know what you are trying to say there).and I am  thankful thanks for my family and for and somebody to teach me my.

The blue part is the only thing I didn't understand. Good job!