Initially, each representative mandated for around 30,000 people. Nowadays, because of the increase in population, each representative mandated for around a million people. With an increase or a decrease in population it might change in the future.
The intent for the separation of powers is to prevent the concentration of power and provide for checks and balances.
There’s answers already on another post if you look it up
W H E E Z E
I don't know is the glass half full or half empty?
It's really a matter of perspective XD