Their small size
Their speed
Their social behavior
Their big brains
Vibration
Sound
Touch
Chemicals
Vision
Larva
Egg
Adult
Pupa
Egg » Pupa » Adult
Egg » Larva » Pupa » Worker » Queen
Egg » Larva » Adult
Egg » Larva » Pupa » Adult
Egg » Pupa » Larva » Adult
Each individual splits its time among many jobs.
The total amount of work is reduced.
Different individuals specialize on different jobs.
Each task is broken up into smaller parts.