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