The Secret to Beetles' Unfathomable Diversity
The evolution of a chemical defense gland allowed the most diverse group of beetles to repel predators and go on to conquer wholly new environments
![The Secret to Beetles' Unfathomable Diversity](https://static.scientificamerican.com/sciam/cache/file/47627C53-9CF6-485F-8A97D0C23E25F039_source.jpg?#)
The evolution of a chemical defense gland allowed the most diverse group of beetles to repel predators and go on to conquer wholly new environments
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