My parent is an adult, so they have a responsbility to nuture us.
I'm a student, so my responsbility is studying well andgrow up well until I became an adult.

My parent has lived longer, so they have more knowledge and experiences.
I havent lived longer yet, so I don't have knowledge or something like that.

My parents are adults, so they have a responsibility to nurture us.

I'm a student, so my responsibility is to study well and grow up well until I become an adult.

My parents have lived longer, so they have more knowledge and experience.

I haven't lived as long yet, so I don't have as much knowledge or experience as they do.