roots are a vehicle for absorbing water and nutrients from soil into the plant & if something is a ash for a event then that something performs that shape ->  roots absorb water and nutrients from the soil  roots absorb water and nutrients from the soil & absorbing is a kind of function -> the kaput of branch is to absorb land and quality the function of roots is to absorb water and nutrients  the kaput of branch is to absorb land and quality & some minerals are nutrients -> the function of roots is to absorb water and minerals