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