A relative humidity of 100% is required to form cloud droplets by condensing the vapor into liquid water.
(A relative humidity of 100%; is required; to form cloud droplets by condensing the vapor into liquid water) (A relative humidity of 100%; to form; cloud droplets)
A relative humidity of 100% A relative humidity of 100%
is required to form
to form cloud droplets by condensing the vapor into liquid water
cloud droplets