Why was Charles Darwin initially puzzled by the observation that worker honey bees die when they sting an intruder to their hive? (The bee's stinger is ripped from the bee's abdomen,causing a fatal injury.)

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Charles Darwin was puzzled by the fact that the worker honey bees die when they sting an intruder to their hive because it seems counterintuitive to the theory of natural selection. The defenders are sacrificing themselves for the greater good of the colony, but this decreases their fitness by reducing their own chances of survival and reproduction. Therefore, it was difficult for Darwin to see how this behavior could have evolved and persisted over time.

Why Was Charles Darwin Initially Puzzled by the Observation That