When the temperature drops, some of the water vapour begins to condense into tiny droplets of water or tiny crystals of ice.
(the temperature; drops; ) (some of the water vapour; begins; T:When the temperature drops) (some of the water vapour; to condense; into tiny droplets of water or tiny crystals of ice)
the temperature some of the water vapour some of the water vapour
drops begins to condense
T:When the temperature drops
into tiny droplets of water or tiny crystals of ice