Communication is also possible among bees through their sense of smell.A ground of bees,called a colony,uses smell to protect itself from other bees.This is possible becaue all the bees in a colony have a common smell.This smell acts like a chemical signal.It warns the group of bees when a bee from a different colony is near.This way,bees from outside cannot enter and disturb a hive (the bee colony's home).If an outside bee does try to enter,the bees of that colony will smell it and attack it.