Eli5 how did bees evolve to be a stinger that kills them when used?

Question

Eli5 how did bees evolve to be a stinger that kills them when used?

In: 2

Answer 1

The stinger is not always plunged into the target and bees choose how hard they sting based on the level of the threat. When you hit the bee or attack the hive, they will always die for the swarm. Someone not seen as that bit a threat might get a light sting to move them on.