The tiny droplets in clouds merge into larger droplets which return to Earth as precipitation - rain, snow, sleet, and hail.
(The tiny droplets in clouds; merge; into larger droplets) (larger droplets; return; to Earth; as precipitation - rain, snow, sleet, and hail)
The tiny droplets in clouds larger droplets
merge return
into larger droplets
to Earth as precipitation - rain, snow, sleet, and hail