How the capacity (C) of a capacitor change with the change in the separation (S) between the plates ?

How does the capacity of a capacitor change, if the separation between the plates is increasd

For a parallel plate capacitor , area of each plate is 1m^(2) and the separation between the plates is 1 mm. The space between the plates contain air Find out the capacitance of this capacitor. (Take, epsilon_(0)=8.85xx10^(-12) SI units)

Fill in the blanks space with appropriate answers : For a parallel plate capacitor the capacity varies.....as the separation between the plates.