If by 'leaf factory' you mean the leaves of plants, then the source of free energy is the Sun, in the form of sunlight form the Sun.
condensation
When tiny droplets cool further they form larger droplets what happens if it becomes too big
Water Droplets Don't Form In The Ocean .. They Form In The Clouds With The Help Of Precipitation
5 droplets form a raindrop.
water droplets in the air form rain which is part of the water cycle
Clouds form condensed droplets of water around molecules. This is tiny particle.
condensation
ice droplets
You can get more daylilies by splitting them. You can get more strawberries by allowing the runners to form new plants. Some plants will grow if you cut off a leaf and stick the leaf in dirt such as ivy or African violet.
Collision-Coalescence
cumulus clouds form layers with water droplets